Yerba Buena IslandYerba Buena Island sits in the San Francisco Bay between San Francisco and Oakland, California. The Yerba Buena Tunnel runs through its center and connects the western and eastern spans of the San Francisco-Oakland Bay Bridge. It has had several other names over the decades: Sea Bird Island, Wood Island, and Goat Island.
As the natural base for the artificial Treasure Island, Yerba Buena and Treasure Islands formed the Treasure Island Naval Base, beginning during World War II until 1996, when it and the Presidio Army Base were decommissioned, and opened to public control, under stipulations.
The first California legislature on February 18, 1850, passed an act establishing the boundaries of San Francisco County and named the island Yerba Buena, after the former name for the city of San Francisco.