Treasure Island

San Francisco Treasure Island

Treasure Island is an artificial island in San Francisco Bay and a neighbourhood of the City of San Francisco. Built 1936–37 for the 1939 Golden Gate International Exposition, the island's World’s Fair site is a California Historical Landmark. Buildings there have been listed on the NRHP, and the island's historical naval station and auxiliary air facility (for airships, blimps, dirigibles, planes and seaplanes) are designated in the Geographic Names Information System.

The San Francisco neighbourhood that includes Treasure Island extends far into San Francisco Bay and includes a tip of Alameda Island. 

The San Francisco – Oakland Bay Bridge (known locally as the Bay Bridge) is a complex of bridges spanning San Francisco Bay in California. As part of Interstate 80 and the direct road between San Francisco and Oakland, it carries about 240,000 vehicles a day on its two decks. It has one of the longest spans in the United States.