Number One Observatory Circle is the official residence of the Vice President of the United States.
Whitehaven is a historic mansion located in the state of Maryland, United States.
Dumbarton Oaks is a historic estate in the Georgetown neighborhood of Washington, D.C.
Tregaron Estate is a picturesque single-family detached home located in Washington, D.C.
Tudor Place is an iconic Federal-style mansion featuring a beautiful, lush garden that was designed by prominent architect William Thornton.
The French ambassador's residence is an architectural masterpiece located in Washington, D.C.
The Frances Perkins House is a significant site related to American labor history.