A leaflet from the Poseidon thermal complex on the island of Ischia in Southern Italy. The Ancient Roman Emperors and other elite took holidays in their villas on the near by island Capri. The islands are near Naples and it’s volcano, Vesuvius.
It can take an afternoon at least to try out all the pools and saunas. The sun beats down on you as you sit in hot pools. You can swim in the sea and sauna in a cave. I walked around the track of a circular pool, feet on a bed of pebbles, through hot water then into freezing cold.