38°53′35″N 77°02′24″W / 38.893°N 77.040°W
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.[1][2] They entertained 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".[2] It was built on land that had been owned by Marcia's father, David Burnes,[3] who left 500 acres along the Potomac River to Van Ness.[4] It was one of the most expensive houses in the country, fitted with hot and cold running water, a modern feature at the time,[1] and the mansion was the first residence in the city to have that luxury.[5] 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.[6] It had the country's largest and coolest wine vault.[5] Latrop said that the Van Ness Mansion was "the best house I ever designed".[4] 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."[4]
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.[7]
The mansion degraded over time.[1] In 1907, the mansion was razed and the Pan American Union Building was built on the site. The stables, also designed by Latrobe, were not demolished at that time.[3] The stuccoed building still exists located at 18th and C Streets.[1]