How much water did the baths of Caracalla hold?

The Baths of Caracalla, one of ancient Rome's largest public bath complexes, could hold approximately 1,600,000 cubic meters (about 423 million gallons) of water. This massive volume was supplied by aqueducts, allowing for a constant flow of fresh water to the baths and other facilities. The baths featured a variety of amenities, including hot and cold pools, making them a central part of Roman social life.