Sometimes referred to as the "North Windmill", the first Golden Gate Park windmill stands 75 feet tall with 102 foot long spars, and was built to pump up to 30,000 gallons an hour of well water for irrigation purposes. (Before the windmill's erection the Park was spending $4,800 a year buying water from the Spring Valley Water Company.) - http://outsidelands.org/dutch_windmill.php
Dutch Windmill
San Francisco
CA
94121
Dutch Windmill, San Francisco, CA
+1 415.831.2700
sfrecpark.org/destination/golden-gate-park/dutch-windmill/