The average hot tub costs around $2500. Throw in maintenance costs, a new swimsuit and a privacy fence to keep your neighbor from seeing your beer belly, and you’re looking at closer to $4000. If the residents of Saturnia heard that, they would probably fall on the floor laughing.

They don’t pay a dime for their hot tub, and it’s state of the art. Not exactly modern state of the art, but it’s self-cleaning and regulating, and can accommodate far more people than the average backyard jacuzzi.