At 3,000 gallons a minute, the outflow keeps this water at a constant 64 degrees.

With my town’s 90 degrees, I’m reminded of this summer’s stop in dusty Santa Rosa for a dip into the Blue Hole. It lets lovely lazying on the steps with feet plunged in while observing a skunkling skirting ’round the rim. I can only imagine what one must have felt in 1930, storming through Route 66 in a droptop, eyes all scuttered up with dust, only to find what is, I’d say, the most refreshing site west of the Mississippi, given its otherwise arid summer surroundings.

(Thanks to Jamie Jensen for pointing this one out.)