The Roman Baths are the last buildings as you leave the site via the northern gate. Built in AD 98-99 under the emperor Trajan and restored by Hadrian, these baths contain some good mosaics and cipolin columns. The frigidarium is the best preserved room of the baths complex and contains a Latin inscription honouring Hadrian.
There is also a apodyterium (changing room), where the statue of the Three Graces now in Tripoli's Jamahiriya Museum was found, as well as the tepidarium and calidarium. In December 1913, during a violent storm, a famous statue of Venus (or Aphrodite) of Cyrene wringing out her hair was unearthed; it now stands in the Museo Nazionale Romano in Rome.