The Barbara Baths were built in the 2nd century as what was then the largest Roman baths. Although only one third of the original facility has been excavated, a tour of the passageways takes a surprisingly long time.

The extensive ruins were used as a castle in the Middle Ages, then torn down and recycled as building material until the remains were used for constructing the Jesuit College in 1610.

Only the foundations and the subterranean service tunnels have survived, but the technical details of the sewer systems, the furnaces, the pools, and the heating system can be studied better than in the other two baths.

Opening hours:
January 1 - March 31: 9 a.m. - 5 p.m.
April 1 - September 30: daily 9 a.m. - 6 p.m.
October 1 - November 30: 9 a.m. - 5 p.m.
December 1 - December 31: 9 a.m. - 4 p.m.

Note:
Last admission 30 minutes before closing. For security reasons, the Barbara Baths may be closed in dangerous weather (ice and snow).