Pennsylvania Avenue National Historic Site is a
National Historic Site in the city of
Washington, D.C. Established on September 30, 1965, the site is roughly bounded by
Constitution Avenue, 15th Street NW, F Street NW, and 3rd Street NW. The historic district includes a number of culturally, aesthetically, and historically significant structures and places, including
Pennsylvania Avenue NW from the
White House to the
United States Capitol, the
Treasury Building,
Freedom Plaza,
Federal Triangle,
Ford's Theatre, the
Old Patent Office Building, the Old Pension Office Building (which now houses the
National Building Museum),
Judiciary Square, and the
Peace Monument.