A postcard of Sutro Baths, circa 1896.
The structure was situated in a small beach inlet below theCliff House.
The baths were 150 meters long, 77 meters wide and held 1.8 million US gallons of water.
During low tides, a powerful turbine water pump could fill the tanks in about five hours.
The Baths had more than 500 private dressing rooms with facilities for 20,000 bathers.
There were slides, trapezes, springboards, and a high dive.
Overtime, the popularity of the Baths also decreased, especially after the Great Depression.
Photo:Gregory Varnum/Wikimedia
Sutro Baths today.