Baths of Caracalla

The Baths of Caracalla were Roman public baths, or thermae, built in Rome between AD 212 and 216, during the reign of the Emperor Caracalla. The extensive ruins of the baths have become a popular tourist attraction. The bath complex covered approximately 13 hectares (33 ac). The bath building was 228 meters (750 ft) long, 116 meters (380 ft) wide and 38.5 meters (125 ft) estimated height, and could hold an estimated 1,600 bathers. The Caracalla bath complex of buildings was more a leisure centre than just a series of baths. The "baths" were the second to have a public library within the complex. Like other public libraries in Rome, there were two separate and equal sized rooms or buildings; one for Greek language texts and one for Latin language texts. The baths consisted of a central 55.7 by 24 meter (183x79 ft) frigidarium (cold room) under three 32.9 meter (108 ft) high groin vault, a double pool tepidarium (medium), and a 35 meter (115 ft) diameter caldarium (hot room), as... full article at wikipedia