Water for the Sutro Baths next to the Cliff House was supplied by an ingenious use of ocean waves.  A basin scooped out of solid rock received the surf that was then conducted to a settling tank.  This seawater rushed along numerous canals to the waiting swim tanks.  There were six of them altogether—one large one that held seawater in its natural state, and five others heated to different temperatures to suit the bathers’ tastes.  Everyone splashed and squealed with delight and even got to ride a huge waterwheel.  Sutro was the place to go to have weekend fun.

1906 inside old sutro baths

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