More than 2,000 years ago, the Romans took advantage of the healing properties in the dozen thermal springs that bubble from beneath the earth, and today 800,000 liters of water a day feed the sleek modern Caracalla Spa. 

The earlier Friedrichsbad, the adjacent Roman-Irish Bath, offers a luxurious 17-step spa treatment program in a beautiful 130-year-old Roman-style setting.

The 4,000-square-meter bathing and therapy center at the Caracalla Spa includes two circular pools and a large central fountain, plus hot and cold rock grottos, whirlpools, swimming pools, saunas, a current channel and water jets, all fed by the springs, from which water rises at temperatures of 69 degrees Celsius.