In the Agora, the central and Southern space was occupied by a huge building complex, probably a gymnasium or a palace, constructed in around 400 AD. The Tholos was repaired and in the place of the Metroon was built a Basilica (probably a jewish synagogue). In the eastern part, the east wall of the ruined Stoa of Attalus was incorporated into the new Wall. In the western part, the Temple of Hephaestus, was converted in the middle of the the 5th century into a church dedicated to St. George.