The Thermae of Antoninus were built in the 2nd century a.c. (145-162), by the emperor Antoninus Pius. Ranked third in the order of magnitude, the thermal unit reflects the importance of Carthage as a Roman city.
Architecturally, the baths have a perfectly symmetric plan specific to the baths of major cities.
Currently, the baths are only reduced to their slot soil, and we can only admire what remains of fragments of marble and granite (friezes, tent…), since the building was transformed in the Middle Ages to a marble quarry used for the ornamentation of the monuments of Kairouan, Tunis or even transported to Europe.
The thermal unit was ranked international monument by UNESCO since October 26, 1979.