Postal Square Building

Washington, D.C., United States

Open to visitors

The interior is normally open, possibly ticketed.

Strollie cannot guarantee access — always check before you travel.

Designed by Daniel Burnham and completed in 1914, the Postal Square Building in Washington, D.C., is a Beaux-Arts structure that served as the city's main post office until 1986. Part of the Senate Parks Commission's 1901 vision to frame the northern Capitol complex, the building echoes the architectural grandeur of its neighboring Union Station, also by Burnham. A major 1929–1935 renovation expanded its mail-processing capacity, though subsequent mid-century modernizations obscured much of its original ornamental character. An early 1990s restoration reinstated the Beaux-Arts detailing of its lobby and main hall. Today the building houses the National Postal Museum, the Bureau of Labor Statistics, and Senate offices.