We're heading to the far west side of the Bay Area for our last stop on the tour... for now. And, we're going back in time. At the end of the 19th century, when Golden Gate Park was just a few decades old, engineers built a pair of windmills to irrigate it. They harnessed the power of the ocean winds to pump water through the barren sand and nourish the verdant landscape. Over time the windmills fell into disrepair and slowly disintegrated. But, in the early 21st century, some visionary San Franciscans decided to rebuild them. We’ll hear that story from Niels Swinkels.