Terme di Saturnia, Grosseto, Italy, May 2018
These terme are incredible. The other hot spring we visited was private and didn't allow photography, and I assumed that was the rule at this public spring as well, so I missed getting good photos. (It was not the rule here. Alas.)
The whole thing was just awe-inspiring: On the other side of that stone building (purpose unknown to me), a 15-foot thermal waterfall comes tumbling down the hillside and cascading into the pools, getting cooler as it goes. The waterfall itself is forceful and hard to sit under (though some dudely dudes were managing), so most people choose a shallow terrace pool at their preferred level of heat and just chill.
We were there on a weekday, but there seemed to be a lot of locals hanging out, lots of families.
The little terrace pools themselves are mostly ankle to shin deep. The bottom is covered in little round pebbles that develop from the minerals in the water. We sat in the pools for probably an hour and just rested our bodies and minds.
Go here to get a sense of the full scope of the spring (Google Maps link): http://bit.ly/2ECXzRu