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Sutro Baths — The checkable facts
Quick answer
Sutro Baths opened in 1896 at the western edge of San Francisco as the largest indoor swimming establishment in the world: seven pools at different temperatures under a glass roof, with 20,000 bathing suits and 40,000 towels for rent and room for 10,000 people at once. Fire destroyed the closed building in June 1966. The concrete ruins are open and free.
| Claim | Source |
|---|---|
| Seven swimming pools at various temperatures | National Park Service — Sutro Baths |
| 20,000 bathing suits and 40,000 towels available for rent | National Park Service — Sutro Baths |
| Could accommodate 10,000 people at one time | National Park Service — Sutro Baths |
| Opened to the public on 14 March 1896 as the world's largest indoor swimming establishment | Wikipedia — Sutro Baths |
| Structure measured 499.5 by 254.1 feet and held roughly two million gallons | Wikipedia — Sutro Baths |
| Burned to its concrete foundation in June 1966; the cause was determined to be arson | Wikipedia — Sutro Baths |
| Adolph Sutro was mayor of San Francisco from 1895 to 1897 | Wikipedia — Adolph Sutro |
Frequently asked
What were the Sutro Baths?
The largest indoor swimming establishment in the world when it opened in 1896: seven pools at different temperatures under a glass and iron roof at the edge of the Pacific, with a museum, an amphitheatre and a concert hall attached. It could hold 10,000 people at a time and rented out 20,000 bathing suits and 40,000 towels.
How did the Sutro Baths burn down?
A fire in June 1966 destroyed the building down to its concrete foundation while demolition crews were already at work on the closed site. Investigators determined the cause was arson. The glass roof came down overnight and the iron frame was left standing bare.
Can you visit the Sutro Baths ruins?
Yes. The site is part of the Golden Gate National Recreation Area, open and free, with no ticket and no gate. You can walk down into the foundation and stand where the pools were. The concrete is uneven and slick where the tide reaches it, so flat shoes matter more than they sound like they should.
Who was Adolph Sutro?
A mining engineer who made a fortune engineering a drainage tunnel for the Comstock Lode, then bought a large share of San Francisco and served as its mayor from 1895 to 1897. He built the baths on the principle that working people should have access to what the wealthy took for granted.
How big were the Sutro Baths?
The glass house measured roughly 500 feet by 250 feet and covered about three acres. Filling it took on the order of two million gallons of seawater, drawn in at high tide, and the pumps could turn over the whole volume in about an hour.
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