The Baths of Caracalla were those most opulent in the Roman empire, as shown in this drawing. Three massive baths in the building could hold 1600 people at one time, were covered in marble, and saw up to 8,000 visitors in one day. Construction used over 1 million bricks, 252 columns, and 13 years (211 to 224). This drawing is inaccurate in one respect, as women and men did not share the baths - men and women had separate hours when they could use the baths. Construction was initiated by Caracalla and completed under his successors. Water came from the Aqua Nova Antoniniana aqueduct.