In the Hot Hall there may have been three different rooms, known as caldaria. There would be a hot bath in the floor and sometimes a laconicum, that was a hot & dry area for those who could take it.

The hot water and steamy air were designed to open your pores, and water and air temperatures may have risen well above 30°C.

You can find out more about how the air and water was heated when you reach the Furnaces page.