Founded in A.D. 75 by the Romans, the baths were dedicated to the goddess Sulis Minerva; in their day, they were an engineering feat. Even today, they're among the finest Roman remains in the country, and they are still fed by Britain's most famous hot-spring water. After centuries of decay, the original baths were rediscovered during Queen Victoria's reign. The site of the Temple of Sulis Minerva has been excavated and is now open to view. The museum displays many interesting objects from Victorian and recent digs (look for the head of Minerva).
Coffee, lunch, and tea, usually with music from the Pump Room Trio, can be enjoyed in the 18th-century pump room, overlooking the hot springs. You can also find a drinking fountain with hot mineral water that tastes horrible.