Old Post Office Pavilion - Clock Tower

The Old Post Office Pavilion, completed in 1899 in Romanesque Revival style, served as the U.S. Post Office Department headquarters and is listed on the National Register of Historic Places. Its 315-foot clock tower is one of the tallest structures in Washington, D.C., and the tower observation area is operated for public access by the National Park Service. The building has been adaptively reused for offices, retail, and hospitality while retaining notable historic architectural features.