Hellenistic fountain house. The fountain house of Ionic order located at the back wall of the Great Theatre’s stage building dates to the Hellenistic period (3rd-1st century BC ). During the Roman period its depth was extended ca. 2 m and the new anteroom which was thereby created was separated from the street at the front by two unfluted columns. As an inscription on one of the columns states, the water collected here was brought in from the Marnas River. The water basin has not survived.