The Washington Navy Yard is the former shipyard and ordnance plant of the U.S. Navy in southeast Washington, D.C. It is the oldest shore establishment of the U.S. Navy. The Yard currently serves as a ceremonial and administrative center for the U.S. Navy and is home to headquarters, Naval District Washington. Washington Navy Yard was added to the National Register of Historic Places in 1973, and designated a National Historic Landmark on May 11, 1976.