History: 1910 image taken off the shoreline of San Francisco's Cliff House and Sutro Baths showing "Bridge Shaped Wave Motor #3" (foreground) and "Wave Motor #4...Surf Power Pump" (structure on top of rock). Mile Rock Lighthouse visible in the background.[1883x891]

https://i.redd.it/h0ktn7u3q5911.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/8xrir3/1910_image_taken_off_the_shoreline_of_san/?utm_source=ifttt