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80-524: Jena ( German pronunciation: [ˈjeːna] ) is a city in Germany and the second largest city in Thuringia . Together with the nearby cities of Erfurt and Weimar , it forms the central metropolitan area of Thuringia with approximately 500,000 inhabitants, while the city itself has a population of about 110,000. Jena is a centre of education and research. The University of Jena (formally

160-516: A few specimens of the rare true service tree ( Cormus domestica ) can be found. Firefly can be seen in the meadows in Paradiespark as well as a variety of native wildflowers. Wildlife on the surrounding mountains includes raven , sand lizard and wood ants . Heron , beaver and muskrat have been seen on the Saale, within the town. Pine martens sometimes come into the town at night, from

240-459: A more rural constitution: Over the centuries, Jena had mostly been a town of 4,000 to 5,000 inhabitants. The population growth began in the 19th century with an amount of 6,000 in 1840 and of 8,000 in 1870. Then, a demographic boom occurred with a population of 20,000 in 1900, 50,000 in 1920, 73,000 in 1940, 81,000 in 1960 and 104,000 in 1980. The peak was reached in 1988 with a population of 108,000. The bad economic situation in eastern Germany after

320-530: A part of Saxe-Weimar , but in 1672 it became the capital of its own small duchy ( Saxe-Jena ). In 1692, after two dukes ( Bernhard II and Johann Wilhelm ), the dukes of Saxe-Jena died out and the duchy became part of Saxe-Eisenach and, in 1741, of the Duchy of Saxe-Weimar , to which it belonged until 1809. From 1809 to 1918, Jena was part of the Duchy (from 1815 Grand Duchy) of Saxe-Weimar-Eisenach , which from 1871

400-596: A role in Polish history – two Wettins were Kings of Poland (between 1697–1763) and a third ruled the Duchy of Warsaw (1807–1814) as a satellite of Napoleon I . After the Napoleonic Wars , the Albertine branch lost about 40% of its lands (the economically less-developed northern parts of the old Electorate of Saxony) to Prussia, restricting it to a territory coextensive with the modern Saxony (see Final Act of

480-835: A sister of the childless former head of the Albertines, Maria Emanuel, Margrave of Meissen (died 2012), who had adopted his nephew and granted him the name Prince of Saxony, contrary to the rules of male descent under the Salic Law . Both are however not recognized by the Nobility Archive in Marburg, nor by the Conference of the Formerly Ruling Houses in Germany – Prince Rüdiger because his father Timo

560-482: A small foreign-born population: circa 4.0% are non-Germans by citizenship and overall 6.2% are migrants (according to 2011 EU census ). Differing from the national average, the biggest groups of migrants in Jena are Russians , Chinese and Ukrainians . During recent years, the economic situation of the city has improved: the unemployment rate declined from 14% in 2005 to 7% in 2013. Due to the official policy of atheism in

640-545: A subcamp of the prison in Sieradz in German-occupied Poland . In 1945, toward the end of World War II , Jena was repeatedly targeted by Allied bombing raids . 709 people were killed, 2,000 injured, and most of the medieval town centre was destroyed, but in parts restored after the end of the war. No other Thuringian city suffered worse damage, except Nordhausen , whose destruction was utter. Today most of

720-476: Is 585 millimeters (23.0 in) with moderate rainfall throughout the year. Light snowfall mainly occurs from December through February, but snow cover does not usually remain for long. During the Middle Ages, Jena was famous for growing wine on its slopes. Nowadays, the next commercial wine-growing areas are situated 20 km (12 mi) down Saale river. Due to its distance to coastal areas and position in

800-479: Is a hub for E-commerce in Germany. Other IT players with regional offices include Accenture or ESET . Jena-Optronik , a subsidiary of the Airbus Group , develops components for spaceflight or satellites in Jena. The city is among Germany's 50 fastest growing regions, with many internationally renowned research institutes and companies, a comparatively low unemployment and a young population structure. Jena

880-445: Is a mere honorific title. The title can be bestowed to a municipality by its respective state government and is generally given to such municipalities that have either had historic town rights or have attained considerable size and importance more recently. Towns with over 100,000 inhabitants are called Großstadt , a statistical notion sometimes translated as "city", but having no effect on their administrative status. In this list, only

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960-651: Is home to professional football club FC Carl Zeiss Jena . The club won the DDR-Oberliga three times, the FDGB Cup four times, and reached the final of the UEFA Cup Winners' Cup once. Post-unification the club have been less successful and they currently compete in Regionalliga Nordost . In women's football, FF USV Jena is a member of the 2. Frauen-Bundesliga . Both clubs' home stadium

1040-624: Is known for certain is Theodoric I of Wettin , also known as Dietrich , Thiedericus , and Thierry I of Liesgau (died c. 982). He was most probably based in the Liesgau (located at the western edge of the Harz ). Around 1000, the family acquired Wettin Castle , which was originally built by the local Slavic tribes (see Sorbs ), after which they named themselves. Wettin Castle is located in Wettin in

1120-574: Is known in Germany for the wide variety of wild orchids which can be found within walking distance of the town. Local nature reserves are maintained by volunteers and NABU . Until the High Middle Ages , the Saale was the border between Germanic regions in the west and Slavic regions in the east. Owing to its function as a river crossing, Jena was conveniently located. Nevertheless, there were also some more important Saale crossings such as

1200-486: Is largely built upon its high-technology infrastructure and research. The precision optical instruments industry is its leading branch to date, although software engineering, other digital businesses, and biotechnology are of growing importance. Furthermore, Jena is also a service hub for its regional environs. Jena lies in a hilly landscape in the east of Thuringia, within the wide valley of the Saale river. Due to its rocky landscape, varied substrate and mixed forests, Jena

1280-417: Is no distinction between town and city in Germany; a Stadt is an independent municipality (see Municipalities of Germany ) that has been given the right to use that title. In contrast, the generally smaller German municipalities that do not use this title, and are thus not included here, are usually just called Gemeinden . Historically, the title Stadt was associated with town privileges , but today it

1360-484: Is not as compact as other cities in the region, and urban planning is still a challenge. A peculiarity of Jena is the presence of a second old town centre with a market square, town hall, and castle in the former town of Lobeda, which is a district since 1946, located approximately 4 km (2 mi) to the south of Jena's centre. Jena has its own theatre and orchestra, the Jenaer Philharmonie . Jena

1440-494: Is one of the leading economic centres of eastern Germany. Furthermore, the university was enlarged and many new research institutes were founded. Especially between 1995 and 1997 several far-right crimes were committed in Jena. The city's far-right scene of the 1990s gave rise to the National Socialist Underground (NSU) terror group. However, the city is no longer considered a far-right hotspot. Jena

1520-598: Is quite unusual for a German city and caused on the one hand by the city's difficult topography and on the other hand by the history, because the two main lines were built by two different private companies. The connection in north–south direction is the Saal Railway with ICE trains running from Berlin in the north to Munich in the south once a day stopping at Paradies station and local trains to Naumburg and Saalfeld stopping at Zwätzen , Saalbahnhof , Paradies and Göschwitz . The connection in west–east direction

1600-557: Is situated in a hilly landscape in eastern Thuringia at the Saale river, between the Harz mountains 85 km (53 mi) in the north, the Thuringian Forest / Thuringian Highland 50 km (31 mi) in the southwest and the Ore Mountains , 75 km (47 mi) in the southeast. The municipal terrain is hilly with rugged slopes at the valley's edges. The city centre is situated at 160 m of elevation, whereas

1680-609: Is the Ernst-Abbe-Sportfeld . Also, the city's basketball team, Science City Jena played in Basketball Bundesliga in 2007–2008 season and returned to top level in 2015–16 season. In addition, since 2000, the university of Jena has a rugby team. Since 2012, the USV Rugby Jena team has been playing in the 2. Rugby-Bundesliga . Current men's javelin throw world record (98.48) by Jan Železný

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1760-545: Is the Weimar–Gera railway with regional express trains to Göttingen (via Erfurt and Weimar ) and Zwickau , Glauchau , Altenburg or Greiz (via Gera ) and local trains between Weimar, Jena and Gera. The express trains stop at West station near the city centre and Göschwitz, the local trains furthermore at Neue Schenke . The junction between both lines is the Göschwitz station , approx. 5 km (3 mi) south of

1840-602: The Duchy of Saxony , centred at Wittenberg , thus becoming one of the prince-electors of the Holy Roman Empire . The family split into two ruling branches in 1485 when the sons of Frederick II, Elector of Saxony divided the territories hitherto ruled jointly. The elder son Ernest , who had succeeded his father as Prince-elector , received the territories assigned to the Elector ( Electorate of Saxony ) and Thuringia , while his younger brother Albert obtained

1920-572: The Ernestine duchies . Nevertheless, with Ernst der Fromme , Duke of Saxe-Gotha (1601–1675), the house gave rise to an important early-modern ruler who was ahead of his time in supporting the education of his people and in improving administration. In the 18th century, Karl August , Duke of Saxe-Weimar-Eisenach, established what was to become known as Weimar Classicism at his court in Weimar, notably by bringing Johann Wolfgang von Goethe there. It

2000-564: The Friedrich Schiller University ) was founded in 1558 and had 18,000 students in 2017 and the Ernst-Abbe-Hochschule Jena serves another 5,000 students. Furthermore, there are many institutes of the leading German research societies. Jena was first mentioned in 1182 and stayed a small town until the 19th century, when industry developed. For most of the 20th century, Jena was a world centre of

2080-945: The Hassegau (or Hosgau) on the Saale River . Around 1030, the Wettin family received the Eastern March as a fief . The prominence of the Wettins in the Slavic Saxon Eastern March (or Ostmark ) caused Emperor Henry IV to invest them with the March of Meissen as a fief in 1089. The family advanced over the course of the Middle Ages : in 1263, they inherited the landgraviate of Thuringia (although without Hesse ) and in 1423, they were invested with

2160-689: The House of Saxe-Coburg and Gotha . The Albertine branch , while less prominent, ruled most of Saxony and played a part in Polish history . Agnates of the House of Wettin have, at various times, ascended the thrones of the United Kingdom , Portugal , Bulgaria , Poland , Saxony , Mexico and Belgium . Only the Belgian line retains their throne today. The oldest member of the House of Wettin who

2240-535: The March of Meissen , which he ruled from Dresden . As Albert ruled under the title of "Duke of Saxony", his possessions were also known as Ducal Saxony . The older Ernestine branch remained predominant until 1547 and played an important role in the beginnings of the Protestant Reformation . Frederick III ( Friedrich der Weise ) appointed Martin Luther (1512) and Philipp Melanchthon (1518) to

2320-702: The Prussian army here in the Battle of Jena-Auerstedt , near the district of Vierzehnheiligen. Resistance against the French occupation was strong, especially among the students. Many of the students fought in the Lützow Free Corps in 1813. Two years later, the Urburschenschaft fraternity was founded in the city. During the later 19th century, the famous biologist Ernst Haeckel was professor at

2400-806: The University of Wittenberg , which he had established in 1502. The Ernestine predominance ended in the Schmalkaldic War (1546/7), which pitted the Protestant Schmalkaldic League against the Emperor Charles V . Although itself Lutheran, the Albertine branch rallied to the Emperor's cause. Charles V had promised Moritz the rights to the electorship. After the Battle of Mühlberg , Johann Friedrich der Großmütige , had to cede territory (including Wittenberg) and

2480-573: The racial policy of Nazi Germany ). Kristallnacht in 1938 led to more discrimination against Jews in Jena, many of whom either emigrated or were arrested and murdered by the German government. This weakened the academic milieu, because many academics were Jews (especially in medicine). During World War II , the Germans operated two subcamps of the Buchenwald concentration camp in the city, and

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2560-514: The 13th century, the Lords of Lobdeburg founded two towns in the valley: Jena on the west bank and Lobeda – which is one of Jena's constituent communities today – 4 km (2 mi) to the south on the east bank. Around 1230, Jena received town rights and a regular city grid was established between today's Fürstengraben, Löbdergraben, Teichgraben and Leutragraben. The city got a marketplace, main church, town hall, council and city walls during

2640-402: The 18th century – and the first suburbs developed in front of the former city gates. In these areas, some historic building structures from the 18th and early 19th century remained in western Bachstraße and Wagnergasse, in northern Zwätzengasse and in southern Neugasse. The later 19th and early 20th centuries brought a construction boom to Jena, with the city enlarged to the north and south along

2720-592: The 1990s, but most of the suburban areas were situated within the administrative city borders. The birth surplus was 62 in 2012, or +0.6 per 1,000 inhabitants (Thuringian average: -4.5; national average: -2.4). The net migration rate was +4.0 per 1,000 inhabitants in 2012 (Thuringian average: -0.8; national average: +4.6). The most important regions of origin of Jena migrants are rural areas of Thuringia, Saxony-Anhalt and Saxony as well as foreign countries such as Poland, Russia, Ukraine, Hungary, Serbia, Romania, and Bulgaria. Like many other eastern German cities, Jena has

2800-699: The British and Portuguese thrones became possessions of persons who belonged to the House of Wettin for a time. From King George I to Queen Victoria , the British Royal family was called the House of Hanover , being a junior branch of the House of Brunswick-Lüneburg and thus part of the dynasty of the Guelphs . In the late 19th century, Queen Victoria charged the College of Arms in England to determine

2880-526: The British public (especially radical Republicans such as H. G. Wells ) to question the loyalty of the royal family. Advisors to King George V searched for an acceptable surname for the British royal family, but Wettin was rejected as "unsuitably comic". An Order in Council legally changed the name of the British royal family to "Windsor" (originally suggested by Lord Stamfordham ) in 1917. Branch of Saxe-Weimar-Eisenach Branch of Saxe-Meiningen In

2960-659: The Congress of Vienna Act IV: Treaty between Prussia and Saxony 18 May 1815). Frederick Augustus III lost his throne in the German Revolution of 1918. The role of current head of the Albertine "House of Saxony" is claimed by his great-grandson Prince Rüdiger of Saxony , Duke of Saxony, Margrave of Meissen (born 23 December 1953). However, the headship of Prince Rüdiger is contested by his second cousin, Alexander (born 1954), son of Roberto Afif (later by change of name Mr Gessaphe) and Princess Maria Anna of Saxony,

3040-455: The GDR government was reinforced during the late 1980s in Jena, fed by academic and clerical circles. In autumn 1989, the city saw the largest protests in its history before the GDR government was dissolved. After 1990, Jena became part of the refounded state of Thuringia . Industry came into a heavy crisis during the 1990s, but finally it managed the transition to the market economy and today, it

3120-457: The Jenaer industrial sector that the city was in need of an electricity generator and in the first years of the 1900s an electrified tramway was founded in Jena. Industrialization fundamentally changed the social structure of Jena. The former academic town became a working-class city; the population rose from 8,000 around 1870 up to 71,000 at the beginning of World War II . The city expanded along

3200-584: The Lutheran doctrine, and Jena was the second-largest printing location in Germany after Leipzig . The list of the so-called " Seven Wonders of Jena " was composed by students of the university at this time, supposedly as a test of local knowledge in order to confirm that a person who claimed to have studied in Jena was actually familiar with the city. Beginning in the 16th century, the Ernestine dynasty saw many territorial partitions. Initially, Jena remained

3280-674: The Magnanimous founded it, because he had lost his old university in Wittenberg to the Albertines after the Schmalkaldic War . During the Little Ice Age , wine-growing declined in the 17th century, so that the new university became one of the most important sources of income for the city. The same century brought a boom in printing business caused by the rising importance of books (and the population's ability to read) in

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3360-509: The Saale valley to the north and the south and its side valleys to the east and the west. In 1901, the tram system started its operation and the university got a new main building (established between 1906 and 1908 on the former castle's site). After the foundation of Thuringia in 1920, Jena was one of the three biggest cities (together with Weimar and Gera , while Erfurt remained part of Prussia ) and became an independent city in 1922. The modern optical and glass industry kept booming and

3440-474: The Saale valley, to the west along Mühltal and on the Saale's east side in former Wenigenjena. Compared with the city centre, later substantial losses were much slighter in this areas. During the interwar period, the construction of flats stayed on a high level but suitable ground got less, so that new housing complexes were set up relatively far away from the centre – a problem that remained until today with long journeys and high rents as consequences. Today's Jena

3520-412: The Saale valley, wind speeds tend to be very low; predominant direction is SW. The Jena weather station has recorded the following extreme values: Jena abuts the district of Saale-Holzland with the municipalities of Lehesten , Neuengönna , and Golmsdorf in the north, Jenalöbnitz , Großlöbichau , and Schlöben in the east and Laasdorf , Zöllnitz , Sulza , Rothenstein , Milda , and Bucha in

3600-488: The area into a number of smaller states. One of the resulting Ernestine houses, known as Saxe-Coburg-Saalfeld until 1826 and as Saxe-Coburg and Gotha after that, went on to contribute kings of Belgium (from 1831) and Bulgaria (1908–1946), as well as furnishing consorts to queens regnant of Portugal ( Prince Ferdinand ) and the United Kingdom ( Prince Albert ), and the Emperor of Mexico ( Carlota of Mexico ) Thus,

3680-502: The brothers August and Friedrich Schlegel , and Ludwig Tieck ). In 1794, the poets Goethe and Schiller met at the university and established a long lasting friendship, based on their love of Shakespeare. Consequently, the reputation of the University and the Duchy of Saxe-Weimar-Eisenach as liberal and open-minded, but severely self-absorbed, was established and enhanced. On 14 October 1806, Napoleon fought and defeated

3760-547: The cities' and towns' names are given. For more restricted lists with more details, see: Numbers of cities and towns in the German states: House of Wettin The family divided into two ruling branches in 1485 by the Treaty of Leipzig : the Ernestine and Albertine branches. The older Ernestine branch played a key role during the Protestant Reformation . Many ruling monarchs outside Germany were later tied to its cadet branch ,

3840-732: The city centre, the Tatzend west of the city centre, the Lichtenhainer Höhe near Lichtenhain, the Holzberg near Winzerla, the Jagdberg near Göschwitz and the Spitzenberg near Maua. The mountains belong to the geological formation of Ilm Saale Plate ( Muschelkalk ) and are relatively flat on their peaks but steep to the valleys in between. Due to its jagged surface, the municipal territory isn't very suitable for agriculture all

3920-431: The city centre. When the Nuremberg–Erfurt high-speed railway opened in 2017, the city lost its connection to the long-distance train network. As compensation, there are new regional express train services to Halle and Leipzig in the north, and to Nuremberg in the south. List of cities and towns in Germany This is a complete list of the 2,056 cities and towns in Germany (as of 1 January 2024). There

4000-420: The city consists of buildings from before World War II. Jena was occupied by American troops on 13 April 1945 and was left to the Red Army on 1 July 1945. Jena fell within the Soviet zone of occupation in post-World War II Germany. In 1949, it became part of the new German Democratic Republic (GDR). The Soviets dismantled great parts of the Zeiss and Schott factories and took them to the Soviet Union . On

4080-454: The city grew further during Weimar times . During the Nazi period, conflicts deepened in Jena between the influential left-wing milieus (communists and social democrats) and the right-wing Nazi milieus. On the one hand, the university suffered from new restrictions against its independence, but on the other hand, it consolidated the Nazi ideology, for example with a professorship of social anthropology (which sought to scientifically legitimize

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4160-409: The city in 1523. Martin Luther visited the town to reorganize the clerical relations and Jena became an early centre of his doctrine. In the following years, the Dominican and the Carmelite convents were attacked by the townsmen and abolished in 1525 (Carmelite) and 1548 (Dominican). An important step in Jena's history was the foundation of the university in 1558. Ernestine Elector John Frederick

4240-512: The correct personal surname of her late husband, Prince Albert of Saxe-Coburg and Gotha —and, thus, the proper surname of the royal family upon the accession of her son. After extensive research, they concluded that it was Wettin, but this name was never used, either by the Queen or by her son ( King Edward VII ) or by her grandson ( King George V ); they were simply Kings of the House of "Saxe-Coburg-Gotha". Severe anti-German sentiment during World War I (1914-1918) led some influential members of

4320-469: The east, Teichgraben in the south and Leutragraben in the west). There are only a few historic buildings in this area (e.g. at Oberlauengasse), due to the destruction during World War II and modernization projects in the following decades. The Eichplatz, a big sub-used square covering a large amount of the centre, has not been built on since the 1960s and the discussion about its future is still in process. The wall's defortification took place relatively early in

4400-426: The electorship to his cousin Moritz. Although imprisoned, Johann Friedrich was able to plan a new university. It was established by his three sons on 19 March 1548 as the Höhere Landesschule at Jena . On 15 August 1557, Emperor Ferdinand I awarded it the status of university. The Ernestine line was thereafter restricted to Thuringia and its dynastic unity swiftly crumbled, dividing into a number of smaller states,

4480-413: The former GDR , most of the population is non-religious. 15.9% are members of the Evangelical Church in Central Germany and 6.6% are Catholics (according to 2011 EU census). Jena has a great variety of museums: Most of the city consists of buildings from before World War II. The historic city centre is located inside the former wall (which is the area between Fürstengraben in the north, Löbdergraben in

4560-401: The late 13th and early 14th centuries making it into a full-fledged town. In this time, the city's economy was based mainly on wine production on the warm and sunny hillsides of the Saale valley. The two monasteries of the Dominicans (1286) and the Cistercians (1301) rounded out Jena's medieval appearance. As the political circumstances in Thuringia changed in the middle of the 14th century,

4640-411: The living conditions of their workers and the local wealth in general. When Zeiss died in 1889, his company passed to the Carl-Zeiss-Stiftung , which uses great amounts of the company's profits for social benefits such as research projects at universities etc. This model became an example for other German companies (e.g. the Robert Bosch Stiftung ). In 1898 it was agreed on with several personalities from

4720-415: The more since the most flat areas along the valley were built on during the 20th century. At the mountains is some forest of different leaf trees and pines. 32 species of native orchids can be found in the Jena area. One of the best places to see them is Leutratal , to the south of the town. Bee orchid ( Ophrys apifera ) even grows at a few locations within the town. On the Hausberg close to Ziegenhain

4800-399: The mountains on both sides of Saale valley rise up to 400 m. On the eastern side those are (from north to south): the Gleisberg near Kunitz, the Jenzig near Wogau, the Hausberg near Wenigenjena, the Kernberge near Wöllnitz, the Johannisberg near Lobeda and the Einsiedlerberg near Drackendorf. On the western side, there are the Jägersberg near Zwätzen , the Windknollen north of

4880-469: The mountains, to raid bins. It is documented that the European wildcat occurs near Jena. Jena has an oceanic climate ( Köppen : Cfb ; Trewartha : Dobk ). Summers are warm and sometimes humid; winters are relatively cold. The city's topography creates a microclimate caused through the basin position with sometimes inversion in winter (quite cold nights under −20 °C (−4 °F)) and heat and inadequate air circulation in summer. Annual precipitation

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4960-420: The nearby cities of Naumburg to the north and Saalfeld to the south, so that the relevance of Jena was more local during the Middle Ages. The first unequivocal mention of Jena was in an 1182 document. The first local rulers of the region were the Lords of Lobdeburg with their eponymous castle near Lobeda , roughly 6 km (4 mi) south of the city centre on the eastern hillside of the Saale valley. In

5040-658: The optical industry around companies such as Carl Zeiss , Schott and Jenoptik (since 1990). As one of only a few medium-sized cities in Germany, it has some high-rise buildings in the city centre, such as the JenTower . These also have their origin in the former Carl Zeiss factory. Between 1790 and 1850, Jena was a focal point of the German Vormärz as well as of the student liberal and unification movement and German Romanticism . Notable persons of this period in Jena were Friedrich Schiller , Alexander von Humboldt , Johann Gottlieb Fichte , Georg Wilhelm Friedrich Hegel , Novalis , and August Wilhelm Schlegel . Jena's economy

5120-402: The other hand, the GDR government founded a new pharmaceutical factory in 1950, Jenapharm , which is part of Bayer today. In 1953, Jena was a centre of the East German Uprising against GDR policy. The protests with 30,000 participants drew fire from Soviet tanks . The following decades brought some radical shifts in city planning. During the 1960s, another part of the historic city centre

5200-405: The photonics lab Lichtwerkstatt Archived 4 February 2018 at the Wayback Machine and the Krautspace there are makerspaces and hackerspaces enabling start-ups to create their product ideas and realizing their first prototype and business models as well as networking. Jena has no central railway station with connection to all the lines at one point. What is relatively common in many countries

5280-404: The reunification resulted in a decline in population, which fell to 99,000 in 1998 before rising again to 107,000 in 2012. The average population growth between 2009 and 2012 was approximately 0.47% p. a, whereas the population in bordering rural regions is shrinking with accelerating tendency. Suburbanization played only a small role in Jena. It occurred after the reunification for a short time in

5360-467: The south and the district of Weimarer Land with the municipalities of Döbritschen , Großschwabhausen , and Saaleplatte in the west. The city is divided into 30 districts. The inner-city districts are Zentrum, Nord, West, Süd, Wenigenjena (east of Saale, incorporated in 1909), and Kernberge, other big districts are Lobeda (incorporated in 1946) and Winzerla (incorporated in 1922) in the south with large housing complexes. The residual districts are from

5440-463: The territorial integrity of Saxony, preserving it as a significant power in the region, and used small appanage fiefs for its cadet branches, few of which survived for significant lengths of time. The Ernestine Wettins, on the other hand, repeatedly subdivided their territory, creating an intricate patchwork of small duchies and counties in Thuringia. The Albertine Wettins ruled as Electors (1547–1806) and Kings of Saxony (1806–1918), and also played

5520-444: The traditional Carl Zeiss AG , Schott AG , Jenoptik and Jenapharm as well as new companies such as Intershop Communications , Analytik Jena , and Carl Zeiss Meditec . Jena has the most market-listed companies and is one of the most important economic centres of east Germany. With companies such as Intershop Communications, Salesforce.com (after the acquisition of Demandware ) and ePages as well as several web agencies, Jena

5600-455: The university. The expansion of science and medicine faculties was closely linked to the industrial boom that Jena saw after 1871. The initial spark of industrialization in Jena was the (relatively late) connection to the railway. The Saal Railway ( Saalbahn , opened in 1874) was the connection from Halle and Leipzig along the Saale valley to Nuremberg and the Weimar–Gera railway (opened 1876) connected Jena with Frankfurt and Erfurt in

5680-522: The very likely event of the extinction of these two senior branches, the sole represantation of the Ernestine Wettins will pass to the descendants of Francis, Duke of Saxe-Coburg-Saalfeld , who are the present Saxe-Coburg-Gothas led by Andreas, Prince of Saxe-Coburg and Gotha (b. 21 March 1943), the House of Windsor , the Royal Family of Belgium and the Royal Family of Bulgaria . Francis and his nephew Ludwig Frederick Emil von Coburg are also ancestors to morganatic lines. For an extensive treatment of

5760-455: The weakened Lords of Lobdeburg sold Jena to the aspiring Wettins in 1331. Jena obtained the Gotha municipal law and the citizens strengthened their rights and wealth during the 14th and 15th centuries. Moreover, the Wettins were more interested in their residence in the nearby city of Weimar , and so Jena could develop itself relatively autonomously. The Protestant Reformation was brought to

5840-454: The west as well as Dresden and Gera in the east. Famous pioneers of the Jenaer industry were Carl Zeiss and Ernst Abbe (with their Carl Zeiss AG ) as well as Otto Schott ( Schott AG ). Since that time, production of optical items, precision machinery and laboratory glassware have been the main branches of Jena's economy; Jena glass is even named after the city. Zeiss, Abbe and Schott worked also as social reformers who wanted to improve

5920-578: Was achieved in Jena. Agriculture plays a small role in Jena, only 40% of the municipal territory are in use for farming (compared to over 60% in Erfurt and nearly 50% in Weimar ). Furthermore, the Muschelkalk soil is not very fertile and is often used as pasture for cattle. The only large agricultural area is situated around Isserstedt, Cospeda and Vierzehnheiligen district in the northwest. Wine-growing

6000-489: Was also part of the German Empire . Around 1790, the university became the largest and most famous one among the German states and made Jena the centre of the self-centred, idealist philosophy of ‘Ich' (with professors such as Johann Gottlieb Fichte , Georg Wilhelm Friedrich Hegel , Friedrich Schiller , and Friedrich Wilhelm Joseph Schelling ). It was also home to the early Romanticism (with poets such as Novalis,

6080-606: Was awarded the title "Stadt der Wissenschaft" (city of science) by the Stifterverband für die Deutsche Wissenschaft , a German science association, in 2008. Jena is also a hub of public and private services, specially in education, research and business services. Other important institutions are the High Court of Thuringia and Thuringia's solely university hospital. Furthermore, Jena is a regional centre in infrastructure and retail with many shopping centres. Together with

6160-501: Was demolished to build the Jen Tower . The Eichplatz in front of the tower is still unbuilt and its future is still the subject of ongoing heated discussion. Big Plattenbau settlements were developed in the 1970s and 1980s, because the population was still rising and the housing shortage remained a perpetual problem. New districts established in the north (near Rautal) and in the south (around Winzerla and Lobeda). The opposition against

6240-569: Was discontinued during the Little Ice Age around 1800, but is now possible again due to global warming . Nevertheless, the commercial production of wine hasn't yet resumed. Industry is a great tradition in Jena, reaching back to the mid-19th century. In 2012, there were 80 companies in industrial production with more than 20 workers employing 8,300 persons and generating a turnover of more than 1,5 billion Euro. The most important branches are precision machinery, pharmaceuticals, optics, biotechnology and software engineering. Notable companies in Jena are

6320-505: Was expelled from the House of Wettin, and Prince Alexander because he is not of agnatic noble descent (his father was Roberto Afif from Lebanon). Consequently, the Albertine branch of the House of Wettin is officially treated by the German nobility as extinct in its legal succession-line. The senior (Ernestine) branch of the House of Wettin lost the electorship to the Albertine line in 1547, but retained its holdings in Thuringia, dividing

6400-496: Was only in the 19th century that one of the many Ernestine branches, the House of Saxe-Coburg and Gotha , regained importance through marriages as the "stud of Europe", by ascending the thrones of Belgium (in 1831), Portugal (1853–1910), Bulgaria (1908–1946) and the United Kingdom (1901-present, though the relevant marriage had taken place in 1840) and also providing a consort to the future Habsburg Emperor of Mexico (1857). The junior Albertine branch maintained most of

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