There were created by Caracalla in 212 BC and the thermal bath stilled in activity till the destruction of the aqueducts which were the town with water during the VI century.

Dropped, in the X century it became a quarry where the people were used to come when they needed building materials.In spite of this, it's still the greatest and the most importal termal edifice of the imperial age.1be thermals rituals were various and to get a thermal cure required a lot of time. 1be customer was starting with a Turkish bath, and then should go in the "Calidarum" a room with vases of very hot water, after this there was the "Tepidarium", and at least the "Frigidarium". The richest customers could finish their cure with some massagges with aromatics oils. Outside the building there was a Gymnasium and a library. Nowadays the ruins are the scenography of the annual performance of the Opera's theatre.