While I agree this is a good match, there is another Treasure Island
Treasure Island is an artificial island in the San Francisco Bay and a neighborhood in the city and county 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.[6] Buildings there have been listed on the National Register of Historic Places, and the historical Naval Station Treasure Island an auxiliary air facility (for airships, blimps, dirigibles, planes and seaplanes) are designated in the Geographic Names Information System.[