Treasure Island

**Treasure Island** was established in 1941 as a United States Navy facility located in the San Francisco Bay, California. Originally constructed on an artificial island for the 1939 Golden Gate International Exposition, it was quickly converted into a naval base with the outbreak of World War II. During the war, Treasure Island served as a crucial center for naval training, processing, and embarkation, handling hundreds of thousands of sailors headed for the Pacific Theater. After the war, the base continued to operate as a communication, administrative, and training hub until its closure in 1997, leaving behind a legacy as a key logistical and personnel support site for the U.S. Navy.