The Pan American Union Building is the headquarters for the Organization of American States . It is located at 17th Street N.W. between C Street N.W. and Constitution Avenue , Northwest, Washington, D.C.
6-568: On the former site of the John Peter Van Ness Mansion . The cornerstone was laid on May 11, 1908, by Theodore Roosevelt , Elihu Root , and Andrew Carnegie (who largely financed the building's construction), and the building was dedicated on April 26, 1910. In 1919, the initial meeting of the International Labour Organization was held in the building. Between 1921 and 1922, the building
12-588: The Madisons, James Monroe , George Washington Parke Custis and John Tayloe III at their mansion. The mansion was described as the "finest house in America". It was built on land that had been owned by Marcia's father, David Burnes , who left 500 acres along the Potomac River to Van Ness. It was one of the most expensive houses in the country, fitted with hot and cold running water, a modern feature at
18-536: The National Register of Historic Places is a stub . You can help Misplaced Pages by expanding it . Van Ness Mansion 38°53′35″N 77°02′24″W / 38.893°N 77.040°W / 38.893; -77.040 The Van Ness Mansion was completed for John Peter Van Ness and Marcia Van Ness in 1816 by Benjamin Henry Latrobe on 17th Street, Washington, D.C. They entertained
24-619: The Van Ness Mansion was "the best house I ever designed". It overlaid his "American rational-configuration on the kind of English residential model that impressed him during his work for and study with S. P. Cockerell ." Latrobe also worked with John Peter Van Ness on the reconstruction of Washington, D.C. public buildings. Van Ness was a commissioner of the Capitol reconstruction commission, along with Richard B. Lee and Tench Ringgold . The mansion degraded over time. In 1907,
30-568: The time, and the mansion was the first residence in the city to have that luxury. Latrobe added a feature designed to maintain a sense of privacy when food was conveyed to dining rooms. Servants accessed rotating servers from a hallway that allowed them to deliver food without entering the room. He installed them previously at the Adena Mansion in Chillicothe, Ohio . It had the country's largest and coolest wine vault. Latrop said that
36-623: Was used for committee and subcommittee hearings throughout the Washington Naval Conference while closely guarded by marines with fixed bayonets. The building was added to the National Register of Historic Places in 1969, and was designated a National Historic Landmark in 2021, for its architecture and its role in international diplomacy. This article about a property in the District of Columbia on
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