Hilton Washington DC National Mall

The Hilton Washington DC National Mall The Wharf, previously known as the L'Enfant Plaza Hotel, is a 367-room hotel located on the top four floors of a 12-story mixed-use building in downtown Washington, D.C., in the United States. It was designed by architect Vlastimil Koubek, and was opened on May 31, 1973, as the Loews L'Enfant Plaza Hotel, named after Pierre Charles L'Enfant, the first surveyor and designer of the street layout of the city.

The hotel sits atop L'Enfant Plaza, an esplanade and plaza structure erected above a highway and a parking garage in the Southwest quadrant of the District of Columbia. The plaza and hotel were approved in 1955, but construction did not begin on the plaza until 1965. The plaza and esplanade were completed in 1968.

Source: Wikipedia