Another amazing thing about these baths is the sewar and drainage system attached to them so they work properly. Unbelievable engineering! The sewar system stilll works perfectly after all this time! The picture above shows how some of the sauna rooms were heated. There would be a floor over top of these stone plates and these would be heated by a nearby furnace. The heat would rise up from these towers and heat up entire rooms in a sort of sauna style. In these rooms various massages would take place.