The Major Roman Thermal Baths of Asturica occupied a central position in the town planning of the city and they were one of its most impressive public buildings. They were placed in the intersection of the two most important road networks and in direct connection with two of the main sewers, still in use today.

Built from the middle of the first century A.C onwards, they would be abandoned , according to the archaeological materials recovered in the fifth century. From this thermal complex ,we have been able to identify a large frigidarium -cold room- and several spaces heated up by means of hypocaustum, in addition to an apodyterium or changing room with a by-chromatic mosaic of huge size, and the pool of the frigidarium.