Shell Building, Art Deco skyscraper in Financial District, San Francisco, United States

The Shell Building is a 29-story skyscraper on Bush Street in the Financial District of San Francisco, decorated inside and out with shell-shaped ornaments. Its design draws from both Art Deco and Gothic Moderne styles, which were common in American commercial construction at the end of the 1920s.

George W. Kelham designed the steel-frame structure, which was finished in 1929, near the peak of San Francisco's first wave of skyscraper construction. Shortly after it opened, the Great Depression brought commercial building in the city to a near halt.

The shell motifs carved into the facade and lobby recall San Francisco's long ties to maritime trade, which shaped the city's identity for generations. Visitors who step inside the lobby can still see these details up close, worked into the stonework and metalwork of the entrance.

The building sits on Bush Street in the Financial District and is easy to reach on foot from the surrounding streets. The lobby is open to visitors, but the office floors above are not accessible to the public.

The Shell Building was put up in just 300 days, and its two-storey mezzanine lobby has bronze doors, marble walls and a ceiling 7.6 metres high. The sepia glazed terracotta of the upper facade carries the shell figures that refer to the building's first owner.