The Caracalla Baths are the best preserved and second oldest public baths in Rome. The monumental complex surrounded by walls covered 12 ha, its architecture was typical of the empire, the interior was decorated with rich decorations. There were pools with hot and cold water, baths, massage and relaxation rooms, a training ground, library, garden, nymphaeum, art gallery and meeting room.
The construction of the baths began by Emperor Septimius Severus in 206, and they were put into service in 216-217 during the reign of Emperor Caracalla. The baths were supplied with water thanks to the Aqua Marcia aqueduct. The baths ceased to be used because of the destruction of the aqueduct supplying water to the facility during the siege of the city by the Goths.
Since 1990, performances and open-air concerts organized by the Teatro dell'Opera di Roma have been taking place in the thermal area during the summer. New York's Gran Central station was modeled on the architecture of the Karakalli thermal baths.