Site information:

The whole island is commemorated by the landmark. 

Plaque and site are located in Angel Island State Park. Tours available and fee required to access island.

37.866723,-122.434893

Plaque information:

State plaque located at Hospital Cove

Plaque text:

Angel Island

In 1775, the packet San Carlos, first known Spanish ship to enter San Francisco Bay, anchored in this cove. While here, the commander, Lieut. Juan Manual de Ayala, directed the first survey of the bay. This island, which Ayala named Isla de los Angeles, has been a Mexican rancho, a U.S. military post, a bay defense site, and a quarantine and immigration station.

Plaque placed by the State Department of Parks and Recreation in cooperation with the City of Tiburon. September 26, 1970

Registered 3/7/1955