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88-491: Yarımburgaz Cave is approximately 20 km (12 mi) west of the city of Istanbul , and about 1.5 km (0.93 mi) north of Lake Küçükçekmece and south of Sazlıdere Dam . It is situated in a locality known today as Altınşehir, within the neighborhood of Güvercintepe in Başakşehir district. The cave was formed as a result of a subterranean river eroding an ancient limestone formation. It has two entrances, one above

176-510: A dotted and dotless I . In English, the stress is on the first or last syllable, but in Turkish it is on the second syllable. A person from the city is an İstanbullu (plural İstanbullular ); Istanbulite is used in English. Neolithic artifacts, uncovered by archeologists at the beginning of the 21st century, indicate that Istanbul's historic peninsula was settled as far back as

264-694: A Turkish city since 1923, it contains many ancient, Roman, Byzantine, Christian, Muslim, and Jewish monuments. The Neolithic settlement in the Yenikapı quarter on the European side, which dates back to c.  6500 BCE and predates the formation of the Bosporus by approximately a millennium, when the Sea of Marmara was still a lake, was discovered during the construction of the Marmaray railway tunnel. It

352-488: A center of Greek culture and Christianity. Numerous churches were built across the city, including Hagia Sophia which was built during the reign of Justinian I and remained the world's largest cathedral for a thousand years. Constantine also undertook a major renovation and expansion of the Hippodrome of Constantinople ; accommodating tens of thousands of spectators, the hippodrome became central to civic life and, in

440-403: A city with above-freezing average temperatures. Istanbul's precipitation is unevenly distributed, with winter months getting at least twice the level of precipitation of their summerly counterparts. The mode of precipitation also varies by season. Winter precipitation is generally light, persistent and often of mixed precipitation such as rain-snow mixes and graupel ; while summer precipitation

528-492: A cosmopolitan society that persisted through much of the Ottoman period. Revitalizing Istanbul also required a massive program of restorations, of everything from roads to aqueducts . Like many monarchs before and since, Mehmed II transformed Istanbul's urban landscape with wholesale redevelopment of the city center. There was a huge new palace to rival, if not overshadow, the old one , a new covered market (still standing as

616-419: A historic cave-church and its proximity to the city center. In order to prevent further damage, the cave was closed off with iron bar gates during the scientific excavations between 1988 and 1990. However, because of neglect by the respective authorities, the gates lost their function in later years, and the cave would inevitably become a shelter frequented by drug users and prostitutes, who littered it. Currently,

704-621: A key role in the advancement of Christianity during Roman/Byzantine times, hosting four of the first seven ecumenical councils before its transformation to an Islamic stronghold following the Fall of Constantinople in 1453 CE—especially after becoming the seat of the Ottoman Caliphate in 1517. In 1923, after the Turkish War of Independence , Ankara replaced the city as the capital of the newly formed Republic of Turkey. Istanbul

792-539: A large role in the city's infrastructure development, with over 500,000 vulnerable buildings demolished and replaced since 2012. According to ministry statements and geologist comments made in 2023, the city's infrastructure was in reasonably good shape, however, due to very high costs, buildings were not: over half a million flats were still vulnerable to collapse, and casualties largely depend on how many collapse. As of 2024 , most buildings in Istanbul were built to

880-479: A low seismic standard in the 20th century, and residents think the city is not properly prepared for the earthquake . Istanbul's climate is temperate , and is often described as transitional between the Mediterranean climate typical of the western and southern coasts of Turkey, and the oceanic climate of the northwestern coasts of the country. Much divergence exists in the terminology used to classify

968-401: A natural toll-gate. Several picturesque islands— Büyükada , Heybeliada , Burgazada , Kınalıada , and five smaller islands—are part of the city. Istanbul's shoreline has grown beyond its natural limits. Large sections of Caddebostan sit on areas of landfill, increasing the total area of the city to 5,343 square kilometers (2,063 sq mi). Despite the myth that seven hills make up

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1056-667: A primary urban park, but it has several green areas. Gülhane Park and Yıldız Park were originally included within the grounds of two of Istanbul's palaces — Topkapı Palace and Yıldız Palace —but they were repurposed as public parks in the early decades of the Turkish Republic. Another park, Fethi Paşa Korusu , is on a hillside adjacent to the Bosphorus Bridge in Anatolia, opposite Yıldız Palace in Europe. Along

1144-428: A result of Istanbul's exponential growth in the 20th century, a significant portion of the city is composed of gecekondus (literally "built overnight"), referring to illegally constructed squatter buildings. At present, some gecekondu areas are being gradually demolished and replaced by modern mass-housing compounds. Moreover, large scale gentrification and urban renewal projects have been taking place, such as

1232-451: A series of nationwide protests in 2013 covering a wide range of issues. Popular during the summer among Istanbulites is Belgrad Forest , spreading across 5,500 hectares (14,000 acres) at the northern edge of the city. The forest originally supplied water to the city and remnants of reservoirs used during Byzantine and Ottoman times survive. Istanbul is primarily known for its Byzantine and Ottoman architecture. Despite its development as

1320-519: A set of corridors lined with office buildings, residential towers, shopping centers, and university campuses, and over 2,000,000 m (22,000,000 sq ft) of class-A office space in total. Maslak , Levent , and Bomonti are important nodes within the CBD. The Atatürk Airport corridor is another such edge city -style business, residential and shopping corridor with over 900,000 m (9,700,000 sq ft) of class-A office space. During

1408-444: A short, sloping passage connects both caves. The lower cave is in the form of a meandering tunnel, forking into two at a distance of 240 m (790 ft) from the mouth. The upper cave's chamber is 15 m (49 ft) wide and 10 m (33 ft) in height. The cave is an important fossil site which has been researched by archeologists , paleontologists , geoarchaeologists and biospeleologists . Scientific exploration of

1496-469: Is a large and rapidly expanding city, its urban heat island has been intensifying the effects of climate change. If trends continue, sea level rise is likely to affect city infrastructure, for example Kadıkoy metro station is threatened with flooding. Xeriscaping of green spaces has been suggested, and Istanbul has a climate-change action plan. The natural vegetation of the province is made up of mixed broadleaf forest and pseudo-maquis , reflecting

1584-445: Is acute in İstanbul with cars, buses and taxis causing frequent urban smog , as it is one of the few European cities without a low-emission zone . As of 2019 the city's mean air quality remains at a level so as to affect the heart and lungs of healthy street bystanders during peak traffic hours, and almost 200 days of pollution were measured by the air pollution sensors at Sultangazi , Mecidiyeköy , Alibeyköy and Kağıthane . It

1672-490: Is also listed as "Cultural Property under Enhanced Protection". During the last two decades, the cave suffered serious, irreversible damage caused by the external interactions of humans. Following scientific excavations inside the cave, and the related publications in the 1990s, the cave gained wide popularity. For this reason, it was brought to the attention of several picnickers, treasure hunters, illegal explorers, amateur speleologists and archaeologists due to its past use as

1760-912: Is derived from Classical Latin fēlis meaning 'cat, ferret'. Carl Linnaeus considered Felis to comprise all cat species known until 1758. Later taxonomists split the cat family into different genera. In 1917, the British zoologist Reginald Innes Pocock revised the genus Felis as comprising only the ones listed in the following table. Estimated genetic divergence times of the listed species are indicated in million years ago (Mya), based on analysis of autosomal , xDNA, yDNA and mtDNA gene segments. diverged 1.62 to 0.59 Mya [REDACTED] diverged 4.88 to 2.41 Mya [REDACTED] diverged 1.86 to 0.72 Mya [REDACTED] diverged 4.44 to 2.16 Mya [REDACTED] diverged 3.67 to 1.72 Mya [REDACTED] diverged 1.86 to 0.72 Mya [REDACTED] Pocock accepted

1848-647: Is generally abrupt and sporadic. Cloudiness, as with precipitation, varies greatly by season. Winters are quite cloudy, with around 20 percent of days being sunny or partly cloudy. Meanwhile, summers experience 60-70 percent of possible sunshine. Snowfall is sporadic, but accumulates virtually every winter; and when it does, it is highly disruptive to city infrastructure. Sea-effect snowstorms with more than 30 centimetres (1 ft) of snowfall happen almost annually, most recently in 2022 . Climate change has caused an increase in Istanbul's heatwaves, droughts, storms, and flooding in Istanbul. Furthermore, as Istanbul

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1936-516: Is one of the 10 worst cities for NO 2 . However a trial of congestion pricing is planned for the historic peninsula. Algal blooms and red tides were reported in the Sea of Marmara and Bosporus (especially in Golden Horn), and regularly happen in urban lakes such as Lake Büyükçekmece and Küçükçekmece . In June 2021, a marine mucilage wave allegedly caused by water pollution spread to Sea of Marmara. The Fatih district, which

2024-521: Is the largest city in Turkey , straddling the Bosporus Strait , the boundary between Europe and Asia. It is considered the country's economic, cultural and historic capital. The city has a population of over 15 million residents, comprising 19% of the population of Turkey, and is the most populous city in Europe and the world's sixteenth-largest city . The city was founded as Byzantium in

2112-710: Is the oldest known human settlement on the European side of the city. The oldest known human settlement on the Asian side is the Fikirtepe Mound near Kadıköy, with relics dating to the Chalcolithic period c.  5500  – c.  3500 BCE . Felis See § Taxonomy Felis is a genus of small and medium-sized cat species native to most of Africa and south of 60° latitude in Europe and Asia to Indochina . The genus includes

2200-402: Is thought to be impossible. Istanbul Municipality's Directorate of Earthquake and Ground Research is responsible for analysing the methods to reduce the urban seismic risk , whereas the national government-controlled Disaster and Emergency Management Presidency is responsible for earthquake emergency response , and will be helped by NGOs such as İHH . The threat of major earthquakes plays

2288-742: The Allies occupied Constantinople on 13 November 1918. The Ottoman Parliament was dissolved by the Allies on 11 April 1920 and the Ottoman delegation led by Damat Ferid Pasha was forced to sign the Treaty of Sèvres on 10 August 1920. Following the Turkish War of Independence (1919–1922), the Grand National Assembly of Turkey in Ankara abolished the Sultanate on 1 November 1922, and

2376-737: The Golden Horn on the site of the early Thracian settlements, fueling the nascent city's economy. The city experienced a brief period of Persian rule at the turn of the 5th century BCE, but the Greeks recaptured it during the Greco-Persian Wars . Byzantium then continued as part of the Athenian League and its successor, the Second Athenian League , before gaining independence in 355 BCE. Long allied with

2464-468: The Grand Bazaar ), porticoes, pavilions, walkways, as well as more than a dozen new mosques. Mehmed II turned the ramshackle old town into something that looked like an imperial capital. Social hierarchy was ignored by the rampant plague, which killed the rich and the poor alike in the 16th century. Money could not protect the rich from all the discomforts and harsher sides of Istanbul. Although

2552-542: The Latin Empire in place of the Orthodox Byzantine Empire. Hagia Sophia was converted to a Catholic church in 1204. The Byzantine Empire was restored, albeit weakened, in 1261. Constantinople's churches, defenses, and basic services were in disrepair, and its population had dwindled to a hundred thousand from half a million during the 8th century. After the reconquest of 1261, however, some of

2640-715: The Pallas's cat as the only member of the genus Otocolobus . Other scientists consider it also a Felis species. Several scientists consider the Chinese mountain cat a subspecies of F. silvestris . The phylogenetic relationships of living Felis species are shown in the following cladogram : Domestic cat ( F. catus ) European wildcat ( F. silvestris ) African wildcat ( F. lybica ) Chinese mountain cat ( F. bieti ) Sand cat ( F. margarita ) Black-footed cat ( F. nigripes ) Jungle cat ( F. chaus ) other Felinae lineages Pantherinae Extinct Felis species in

2728-644: The domestic cat . The smallest of the seven Felis species is the black-footed cat with a head and body length from 38 to 42 cm (15 to 17 in). The largest is the jungle cat with a head and body length from 62 to 76 cm (24 to 30 in). Genetic studies indicate that the Felinae genera Felis , Otocolobus and Prionailurus diverged from a Eurasian progenitor of the Felidae about 6.2 million years ago, and that Felis species split off 3.04 to 0.99 million years ago. The generic name Felis

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2816-554: The fossil record include: Felis species have high and wide skulls, short jaws and narrow ears with short tufts, but without any white spots on the back of the ears. Their pupils contract to a vertical slit. A black cat from Transcaucasia described in 1904 as F. daemon by Satunin turned out to be a feral cat , probably a hybrid of wildcat and domestic cat. The Kellas cat is a hybrid between domestic cat and European wildcat occurring in Scotland . The Corsican wildcat

2904-603: The metropolitan area of Istanbul as result of urban sprawl . Istanbul is in north-western Turkey and straddles the Bosporus Strait , which provides the only passage from the Black Sea to the Mediterranean via the Sea of Marmara . Historically, the city has been ideally situated for trade and defense: The confluence of the Sea of Marmara, the Bosporus, and the Golden Horn provide both ideal defense against enemy attack and

2992-483: The 17th century, such as Evliya Çelebi , describe it as the common Turkish name of the time; between the late 17th and late 18th centuries, it was also in official use. The first use of the word Islambol ( Ottoman Turkish : اسلامبول ) on coinage was in 1730 during the reign of Sultan Mahmud I . In modern Turkish , the name is written as İstanbul , with a dotted İ, as the Turkish alphabet distinguishes between

3080-458: The 1950s the number of dolphin observations has become increasingly rare. Mediterranean monk seals were present in Bosporus, and Princes' Islands and Tuzla shores were seal breeding areas during summer, but they have not been observed in Istanbul since the 1960s and thought to be extinct in the region. Water pollution, overfishing and destruction of coastal habitats caused by urbanization are main threats to Istanbul's marine ecology. Apart from

3168-459: The 1960s as part of the process of Turkification . Further mass expulsions of Greeks took place in 1964–1965. As a result of these policies, the Greek population of Istanbul decreased from 110,000 in 1919 to 2,500 today. From the late 1940s and early 1950s, Istanbul underwent great structural change, as new public squares, boulevards, and avenues were constructed throughout the city, sometimes at

3256-575: The 19th century, leaving only the Galata Tower , to make way for the northward expansion of the city. Galata ( Karaköy ) is today a quarter within the Beyoğlu district, which forms Istanbul's commercial and entertainment center and includes İstiklal Avenue and Taksim Square . Dolmabahçe Palace , the seat of government during the late Ottoman period, is in the Beşiktaş district on the European shore of

3344-583: The 5th and 6th centuries, the center of episodes of unrest, including the Nika riots . Constantinople's location also ensured its existence would stand the test of time; for many centuries, its walls and seafront protected Europe against invaders from the east and the advance of Islam. During most of the Middle Ages , the latter part of the Byzantine era, Constantinople was the largest and wealthiest city on

3432-642: The 6th millennium BCE. That early settlement, important in the spread of the Neolithic Revolution from the Near East to Europe, lasted for almost a millennium before being inundated by rising water levels. The first human settlement on the Asian side, the Fikirtepe mound, is from the Copper Age period, with artifacts dating from 5500 to 3500 BCE, On the European side, near the point of

3520-549: The 7th century BCE by Greek settlers from Megara . In 330 CE, the Roman emperor Constantine the Great made it his imperial capital, renaming it first as New Rome ( Ancient Greek : Νέα Ῥώμη Nea Rhomē ; Latin : Nova Roma ) and then finally as Constantinople ( Constantinopolis ) after himself. In 1930, the city's name was officially changed to Istanbul, the Turkish rendering of εἰς τὴν Πόλιν eis tḕn Pólin 'to

3608-497: The Ankara government, commanded by Şükrü Naili Pasha (3rd Corps), entered the city with a ceremony on 6 October 1923, which has been marked as the "Liberation Day of Istanbul" ( İstanbul'un Kurtuluşu ), and has been commemorated annually since. On 29 October 1923 the Grand National Assembly of Turkey declared the establishment of the Turkish Republic, with Ankara as its capital. Mustafa Kemal Atatürk became

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3696-690: The Bosporus, to the north of Beyoğlu. The former village of Ortaköy is within Beşiktaş and gives its name to the Ortaköy Mosque on the Bosporus, near the Bosporus Bridge . Lining both the European and Asian shores of the Bosporus are the historic yalıs , luxurious chalet mansions built by Ottoman aristocrats and elites as summer homes. Inland, north of Taksim Square is the Istanbul Central Business District ,

3784-606: The City', the appellation Greek speakers used since the 11th century to colloquially refer to the city. The city served as an imperial capital for almost 1600 years: during the Byzantine (330–1204), Latin (1204–1261), late Byzantine (1261–1453), and Ottoman (1453–1922) empires. The city grew in size and influence, eventually becoming a beacon of the Silk Road and one of the most important cities in history. The city played

3872-406: The European continent and at times the largest in the world. Constantinople is generally considered to be the center and the "cradle of Orthodox Christian civilization ". Constantinople began to decline continuously after the end of the reign of Basil II in 1025. The Fourth Crusade was diverted from its purpose in 1204, and the city was sacked and pillaged by the crusaders. They established

3960-647: The European railway network in the 1880s. Modern facilities, such as a water supply network, electricity, telephones, and trams, were gradually introduced to Constantinople over the following decades, although later than to other European cities. The modernization efforts were not enough to forestall the decline of the Ottoman Empire . With the Young Turk Revolution in 1908, the Ottoman Parliament , closed since 14 February 1878,

4048-605: The European side, and close to the Fatih Sultan Mehmet Bridge , is Emirgan Park , which was known as the Kyparades ('Cypress Forest') during the Byzantine period. In the Ottoman period, it was first granted to Nişancı Feridun Ahmed Bey in the 16th century, before being granted by Sultan Murad IV to the Safavid emir Gûne Han in the 17th century, hence the name Emirgan . The 47-hectare (120-acre) park

4136-474: The Forty Thieves"), based on the folk tale Ali Baba , with a role as the treasure cave that opens with the magic words " open sesame " and closes off with "close sesame", respectively. For the filming of an episode of the television series Küçük Ağa (English: "Little Agha"), historic frescos on the cave walls were scratched off and removed, and some of them were painted over with exit signs . During

4224-531: The Great effectively became the emperor of the whole of the Roman Empire in September 324. Two months later, he laid out the plans for a new, Christian city to replace Byzantium. As the eastern capital of the empire, the city was named Nova Roma ; most called it Constantinople, a name that persisted into the 20th century. On 11 May 330, Constantinople was proclaimed the capital of the Roman Empire, which

4312-406: The Ottoman period, Üsküdar (then Scutari) and Kadıköy were outside the scope of the urban area, serving as tranquil outposts with seaside yalıs and gardens. But in the second half of the 20th century, the Asian side experienced major urban growth; the late development of this part of the city led to better infrastructure and tidier urban planning when compared with most other residential areas in

4400-544: The Republic's first President . A 1942 wealth tax assessed mainly on non-Muslims led to the transfer or liquidation of many businesses owned by religious minorities. The state-sanctioned 1955 Istanbul pogrom , in which hundreds of Greek men, women and children were attacked and raped and dozens murdered, led to the emigration of most of the remaining Greeks in Istanbul. Government persecution of Greeks and religious minorities, especially Christians , intensified through

4488-565: The Romans, Byzantium officially became a part of the Roman Empire in 73 CE. Byzantium's decision to side with the Roman usurper Pescennius Niger against Emperor Septimius Severus cost it dearly; by the time it surrendered at the end of 195 CE, two years of siege had left the city devastated. Five years later, Severus began to rebuild Byzantium, and the city regained—and, by some accounts, surpassed—its previous prosperity. Constantine

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4576-464: The Sultan lived at a safe remove from the masses, and the wealthy and poor tended to live side by side, for the most part Istanbul was not zoned as modern cities are. Opulent houses shared the same streets and districts with tiny hovels. Those rich enough to have secluded country properties had a chance of escaping the periodic epidemics of sickness that blighted Istanbul. The Ottoman dynasty claimed

4664-517: The cave began in the mid-19th century. Excavation attempts made in 1920 were followed by systematic archaeological work in the 1980s financially supported by the National Geographic Society . In the Byzantine era , a cave-church was carved into the walls of the upper cave, and a monastery was built outside the cave mouth. Although these alterations may have resulted in the loss of prehistoric material, some artefacts remain in

4752-451: The cave walls are painted and scratched with graffiti . To establish a mushroom farm inside the cave, the cave grounds were leveled by a grader. The mouth of the cave was enlarged even to enable the grader's entry. The cave was also used several times as a setting in filmmaking and television productions that left permanent modifications inside the cave. The cave featured in the 1971 movie Ali Baba ve Kırk Haramiler (English: "Ali Baba and

4840-582: The cave. In the upper cave, traces of settlements were found dating back to the Upper Paleolithic subdivision of the Stone Age up until the Chalcolithic period of the Bronze Age . These traces were lying on beach sand from the last interglacial period and beneath debris from Byzantine and later times. The beach sand covers sediments with Lower Paleolithic artifacts . The upper cave

4928-420: The city , there are, in fact, more than 50 hills within the city limits. Istanbul's tallest hill, Aydos, is 537 meters (1,762 ft) high. The North Anatolian Fault , under the Sea of Marmara , is locked just south of the city. This fault caused the earthquakes in 1766 and 1894 , and a quake of at least magnitude 7.0 is very likely in the 21st century, though an earthquake with a magnitude above 7.5

5016-431: The city is Byzantium ( Ancient Greek : Βυζάντιον , Byzántion ), the name given to it at its foundation by Megarian colonists around 657 BCE. Megarian colonists claimed a direct line back to the founders of the city, Byzas, the son of the god Poseidon and the nymph Ceroëssa. Modern excavations have raised the possibility that the name Byzantium might reflect the sites of native Thracian settlements that preceded

5104-439: The city's climate , however. The city's summers are warm to hot and moderately dry, with an average daytime temperature of about 28 °C (82 °F), and less than 7 days of precipitation per month. Despite the generally acceptable temperature range, mid-summer in Istanbul is considered moderately uncomfortable, due to high dew points and relative humidity. Winters, meanwhile, are cool, quite rainy, and relatively snow-rich for

5192-655: The city's monuments were restored, and some, like the two Deesis mosaics in Hagia Sophia and Kariye, were created. Various economic and military policies instituted by Andronikos II Palaiologos , such as the reduction of military forces, weakened the empire and left it vulnerable to attack. In the mid-14th-century, the Ottoman Turks began a strategy of gradually taking smaller towns and cities, cutting off Constantinople's supply routes and strangling it slowly. On 29 May 1453, after an eight-week siege during which

5280-432: The city's transitional, Mediterranean-influenced humid temperate climate. Chestnut , oak , elm , linden , ash and locust comprise the most prominent temperate forest genera, while laurel , terebinth , Cercis siliquastrum , broom , red firethorn , and oak species such as Quercus cerris and Quercus coccifera are the most important species of Mediterranean and Submediterranean distribution. Apart from

5368-562: The city. Much of the Asian side of the Bosporus functions as a suburb of the economic and commercial centers in European Istanbul, accounting for a third of the city's population but only a quarter of its employment. However, Kozyatağı – Ataşehir , Altunizade , Kavacık and Ümraniye , all together having around 1.4 million sqm of class-A office space, are now important " edge cities ", i.e. corridors and nodes of business and shopping centers and of tall residential buildings. As

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5456-663: The counter-revolution attempt known as the 31 March incident . A series of wars in the early 20th century, such as the Italo-Turkish War (1911–1912) and the Balkan Wars (1912–1913), plagued the ailing empire's capital and resulted in the 1913 Ottoman coup d'état , which brought the regime of the Three Pashas . The Ottoman Empire joined World War I (1914–1918) on the side of the Central Powers and

5544-419: The expense of historical buildings. The overall population of Istanbul began to rapidly increase in the 1970s, as people from Anatolia migrated to the city to find employment in the many new factories that were built on the outskirts of the sprawling metropolis. This sudden, sharp rise in the city's population caused a large demand for housing, and many previously outlying villages and forests became engulfed into

5632-430: The filming of the science-fiction movie Yorr’un Öyküsü (English: "The Story of Yorr"), a large pool was built inside the cave, which was then detonated by explosives according to the scenario. The cave also became a setting for the television comedy series Leyla ile Mecnun produced by the state-owned Turkish Radio and Television Corporation (TRT), in which fire was set to depict hell. The filming of some episodes of

5720-552: The fossils of several species of Middle Pleistocene bats ( Chiroptera ), including horseshoe bats ( Rhinolophus ), mouse-eared bats ( Myotis ), long-eared bats ( Plecotus ) and bent-winged bats ( Miniopterus ). Some artifacts found in Yarımburgaz Cave are exhibited in the Istanbul Archaeology Museums . In 2001, Yarımburgaz Cave was declared an archaeological-nature reserve of first grade. It

5808-572: The fully-fledged town. Constantinople comes from the Latin name Constantinus , after Constantine the Great , the Roman emperor who refounded the city in 324 CE. Constantinople remained the most common name for the city in the West until the 1930s, when Turkish authorities began to press for the use of Istanbul in foreign languages. Ḳosṭanṭīnīye ( Ottoman Turkish : قسطنطينيه ) and İstanbul were

5896-411: The last Ottoman Sultan, Mehmed VI , was declared persona non grata . Leaving aboard the British warship HMS Malaya on 17 November 1922, he went into exile and died in Sanremo , Italy, on 16 May 1926. The Treaty of Lausanne was signed on 24 July 1923, and the occupation of Constantinople ended with the departure of the last forces of the Allies from the city on 4 October 1923. Turkish forces of

5984-450: The last Roman emperor, Constantine XI , was killed, Sultan Mehmed II "the Conqueror" captured Constantinople . Sultan Mehmed declared Constantinople the new capital of the Ottoman Empire . Hours after the fall of the city, the sultan rode to the Hagia Sophia and summoned an imam to proclaim the shahada , converting the grand cathedral into an imperial mosque due to the city's refusal to surrender peacefully. Mehmed declared himself as

6072-403: The names used alternatively by the Ottomans during their rule. The name İstanbul ( Ottoman Turkish : استانبول ; pronounced [isˈtanbuɫ] , colloquially [ɯsˈtambuɫ] ) is commonly held to derive from the Medieval Greek phrase eis tḕn Pólin ( εἰς τὴν Πόλιν , pronounced [is tim ˈbolin] ), literally 'to the city' and is how Constantinople

6160-430: The natural flora, Platanus orentalis , horse chestnut , cypress and stone pine make up the introduced species that got acclimatized to Istanbul. In a study that examined urban flora in Kartal , a total of 576 plant taxa were recorded; of those 477 were natural and 99 were exotic and cultivated. The most prominent native taxa were in the Asteraceae family (50 species), while the most diverse exotic plant family

6248-569: The new Kayser-i Rûm , the Ottoman Turkish equivalent of the Caesar of Rome, and the Ottoman state was reorganized into an empire. Following the capture of Constantinople, Mehmed II immediately set out to revitalize the city. Cognizant that revitalization would fail without the repopulation of the city, Mehmed II welcomed everyone–foreigners, criminals, and runaways– showing extraordinary openness and willingness to incorporate outsiders that came to define Ottoman political culture. He also invited people from all over Europe to his capital, creating

6336-547: The one in Tarlabaşı ; some of these projects, like the one in Sulukule , have faced criticism. The Turkish government also has ambitious plans for an expansion of the city west and northwards on the European side in conjunction with the new Istanbul Airport , opened in 2019; the new parts of the city will include four different settlements with specified urban functions, housing 1.5 million people. Istanbul does not have

6424-513: The other. The lower entrance is at an altitude of 11.5 m (38 ft) AMSL , which the upper entrance is situated 7 m (23 ft) above. The cave is on the eastern bank of the Sazlıdere creek, which empties into Lake Küçükçekmece. The entrances face southwards overlooking Sazlıdere Valley. Whereas the lower cave has a length of 500 m (1,600 ft), the upper is only 52 m (171 ft) long. After about 25 m (82 ft) inside,

6512-545: The peninsula ( Sarayburnu ), there was a Thracian settlement during the early 1st millennium BCE. Modern authors have linked it to the Thracian toponym Lygos , mentioned by Pliny the Elder as an earlier name for the site of Byzantium. The history of the city proper begins around 660 BCE, when Greek settlers from Megara established Byzantium on the European side of the Bosporus. The settlers built an acropolis adjacent to

6600-513: The status of caliphate in 1517, with Constantinople remaining the capital of this last caliphate for four centuries. Suleiman the Magnificent 's reign from 1520 to 1566 was a period of especially great artistic and architectural achievement; chief architect Mimar Sinan designed several iconic buildings in the city, while Ottoman arts of ceramics , stained glass , calligraphy , and miniature flourished. The population of Constantinople

6688-591: The television series Muhteşem Yüzyıl (English: "The Magnificent Century"), a prime-time historical soap opera , inside the cave without proper permission allegedly caused damage to the cave. As such, the Ministry of Culture and Tourism filed a complaint against the producers. A group of local politicians inspected the cave in February 2015, and reported that the cave's protection is still neglected despite its importance and status. Istanbul Istanbul

6776-404: The waters of Istanbul has dwindled in the recent decades. From around 60 different fish species recorded in the 1970s only 20 of them still survive in the Bosporus. Common bottlenose dolphin (Turkish: afalina ), short-beaked common dolphin (Turkish: tırtak ) and harbor porpoise (Turkish: mutur ) make up the marine mammals presently found in the Bosporus and surrounding waters, though since

6864-608: The wild land mammals Istanbul hosts a sizeable stray animal population. The presence of feral cats in Istanbul ( Turkish : sokak kedisi ) is noted to be very prevalent, with estimates ranging from a hundred thousand to over a million stray cats. The feral cats in the city have gained widespread media and public attention and are considered to be symbols of the city. Rose-ringed parakeet colonies are present in urban areas, similar to other European cities as feral parrots , and considered as invasive species . Air pollution in Turkey

6952-443: Was Rosaceae (16 species). Turkish Straits and Sea of Marmara play a vital role for migrating fish and other marine animals between Mediterranean, Marmara and Black Sea. Bosporus hosts pelagic , demersal and semipelagic fish species and more than 130 different taxa have been documented in the strait. Bluefish , bonito , sea bass , horse mackerel and anchovies compose the economically important species. Fish diversity in

7040-460: Was 570,000 by the end of the 18th century. A period of rebellion at the start of the 19th century led to the rise of the progressive Sultan Mahmud II and eventually to the Tanzimat period, which produced political reforms and allowed new technology to be introduced to the city. Bridges across the Golden Horn were constructed during this period, and Constantinople was connected to the rest of

7128-1320: Was destroyed by treasure hunting and illicit diggings, which left 2–3 m (6.6–9.8 ft)-deep pits. Unlike the prehistoric deposits found in the lower cave, the upper cave lacks any evidence of debris from that era. The existence of paleontological and archaeological findings point towards the use of the cave as a human and an animal habitat, alternatively. The finds include bones of herbivore and carnivore mammals , marine and freshwater molluscs , microfauna as well as artifacts like potsherds , knives on flint , oldowans , choppers and hammerstones on quartzite , as well as manuports . The wide variety of prehistoric faunal specimens belong to bones of herbivore mammals such as cave bears ( Ursus deningeri ), horses ( Equus caballus ), wild boars ( Sus scrofa ), fallow deer ( Dama dama ), roe deer ( Capreolus capreolus ), deer ( Megaloceros ), cattle ( Bos / Bison ), antilopes ( Gazella ), goats ( Capra ), and carnivores such as wolves and dogs ( Canis ), foxes ( Vulpes ), tigers ( Panthera ), cats ( Felis ) and hyenas ( Crocuta ). Findings of "more than 5000 fossil bones and teeth of cave and brown bears", which provide some chronological indicators, led to their extensive scientific study. Another subject of such extensive study were

7216-500: Was later owned by Khedive Isma'il Pasha of Ottoman Egypt in the 19th century. Emirgan Park is known for its diversity of plants and an annual tulip festival is held there since 2005. The AKP government's decision to replace Taksim Gezi Park with a replica of the Ottoman era Taksim Military Barracks (which was transformed into the Taksim Stadium in 1921, before being demolished in 1940 for building Gezi Park) sparked

7304-403: Was later permanently divided between the two sons of Theodosius I upon his death on 17 January 395, when the city became the capital of the empire; during the following millennium of Roman history the state is commonly referred to as the "Byzantine Empire". The establishment of Constantinople was one of Constantine's most lasting accomplishments, shifting Roman power eastward as the city became

7392-456: Was named after Mehmed II ( Turkish : Fatih Sultan Mehmed ), corresponds to what was the whole of Constantinople until the Ottoman conquest; today it is the capital district and called the historic peninsula of Istanbul on the southern shore of the Golden Horn , across the medieval Genoese citadel of Galata on the northern shore. The Genoese fortifications in Galata were largely demolished in

7480-502: Was referred to by the local Greeks. This reflected its status as the only major city in the vicinity. The importance of Constantinople in the Ottoman world was also reflected by its nickname Dersaadet ( Ottoman Turkish : درساعدت ) meaning the 'Gate to Prosperity' in Ottoman Turkish. An alternative view is that the name evolved directly from "Constantinople", with the first and third syllables dropped. Some Ottoman sources of

7568-488: Was reopened 30 years later on 23 July 1908, which marked the beginning of the Second Constitutional Era . The civil strife and political uncertainties in the Ottoman Empire during the months after the revolution encouraged Austria-Hungary to annex Bosnia and Bulgaria to declare its independence in a jointly coordinated move on 5 October 1908. Sultan Abdul Hamid II was deposed in 1909, following

7656-422: Was the 2010 European Capital of Culture . The city has surpassed London and Dubai to become the most visited city in the world, with more than 20 million foreign visitors in 2023. The historic centre of Istanbul is a UNESCO World Heritage Site , and the city hosts the headquarters of numerous Turkish companies, accounting for more than thirty percent of the country's economy . The first known name of

7744-460: Was ultimately defeated. The deportation of Armenian intellectuals on 24 April 1915 was among the major events which marked the start of the Armenian genocide during WWI. Due to Ottoman and Turkish policies of Turkification and ethnic cleansing , the city's Christian population declined from 450,000 to 240,000 between 1914 and 1927. The Armistice of Mudros was signed on 30 October 1918 and

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