The Baths of Caracalla
This a replica of the Baths of Caracalla.
Caracalla was a vicious ruler. His worker worked day and night in any kind of weather. He wanted the baths built quick so maybe people wouldn't think of him as such a vicious ruler. When they were finished everyone enjoyed them. There were Olympic sized pools, spas, and baths. The baths were hot and cold. At the baths, there was an underground heating system to kept the water warm.