The Termae Anthoninianae, also known as the Baths of Caracalla, are some of the best preserved imperial building of the ancient times. They were built in the southern part of Rome, under emperor Caracalla, and were finished in 216 A.D. They exhibit the rectangular plan typical of Imperial spa centres and was not simply a place for bathing, sport and health, but it was also a place of study and for relaxing. Entrance to the heart of the building was by one of four porticos on the north-east face.