Sutro Baths

The Sutro Baths was a large, privately owned public saltwater swimming pool complex in the Lands End area of the Outer Richmond District in western San Francisco, California.Built in 1894, the Sutro Baths was located north of Ocean Beach, the Cliff House, Seal Rocks, and west of Sutro Heights Park. The structure burned down to its concrete foundation in June 1966; its ruins are located in the Golden Gate National Recreation Area and the Sutro Historic District.

Source: Wikipedia