Administration Building, Treasure Island

Administration Building, Treasure Island
The Administration Building in August 2021
Location1 Avenue of the Palms
Treasure Island, San Francisco
Coordinates37°49′1″N 122°22′13″W / 37.81694°N 122.37028°W / 37.81694; -122.37028
Area2 acres (0.81 ha)
Built1938
ArchitectDay, William Peyton; Kelham, George William
Architectural styleModerne, Art Deco
NRHP reference No.08000081
Added to NRHPFebruary 26, 2008

The Administration Building, Treasure Island, on Treasure Island, California, is a Moderne style building designed by William Peyton Day and George William Kelham. It has also been known as Building 1, as Command Naval Base San Francisco Headquarters, and as Naval Station Treasure Island. It was listed on the National Register of Historic Places in 2008.

Construction began in 1937 with landfill and site preparation, and was completed in 1938. During the Golden Gate International Exposition the building functioned as the terminal for Pan American Airways China Clipper transpacific flying boat service. The United States Navy took over Treasure Island when the exposition ended and rather than continue as an airport, the building became an administration building.

The building housed a museum until 1997. In 2011, San Francisco purchased Treasure Island from the U.S. Navy and there are plans to reopen the museum as part of a redevelopment project.