The famous baths of Zeuxippos allegedly were already begun in the time of old Byzantium and finished by Constantine the Great. In their great courtyard, the so-called Gymnasion, there was a big collection of antique sculpture that was destroyed when the baths burned down in 532 together with all surrounding buildings. The baths were, however, reconstructed; they still existed in the middle byzantine time, but were later used as a silk factory and as a prison.