DID YOU KNOW: Where does the Vice President live in Washington DC? The white 19th Century house at Number One Observatory Circle in northwestern Washington, D.C., was built in 1893. Author: Reagan Roy Updated: 6:50 AM CST January 21, 2021 WASHINGTON, D.C., USA — With their offices located on the White House grounds, every Vice President since Walter Mondale has Located on the grounds of the United States Naval Observatory (USNO), the white 19th Century house at Number One Observatory Circle in northwestern Washington, D.C., was built in 1893. Originally intended for the superintendent of the USNO, the house was so lovely that in 1923, the chief of naval operations kicked out the superintendent so he could move in himself.