Barbarathermen (Barbara Baths), Trier

Barbarathermen, or the Barbara Baths, are a Roman bath complex. This large complex covers over 42,000 square meters, or roughly 10 acres, near the center of the city. It is the largest Roman bath complex north of the Alps.

The baths were built in the 2nd century and were used through the 4th century. They were then used as a castle, but torn down so that the materials could be repurposed for a Jesuit College that was constructed in 1610.

The ruins of the baths include the foundations and the subterranean tunnels. Only about one-third of the ruins have been unearthed thus far. The visitor's walkway displays reconstructions of the architecture as well as the course of a typical day at the baths.

The Barbara Baths were named a UNESCO World Heritage Site in 1986. They are open from 10 AM to 6 PM daily from April to September. Hours are shortened to 10 AM to 4 PM during the winter months. There is no entry fee to explore the Barbara Baths.