These are ancient Roman baths, erected at a time when Emperor Constantine was in Arles (4th century). Public baths, which were heated by hot air flowing through channels in the floor and walls, gradually turned into complex structures with many rooms: a dressing room, rooms with cold, cool and hot water, a ball game room, gymnasiums, libraries, rooms for conversations. and academic pursuits. In the 19th century, the Baths were partially cleared. At the moment, only the northern part of the building is visible.→