Sanctuary of Athena. In the 4th century BC the architect Pytheos designed the largest temple in the city for its patron deity, Athena Polias. Initial construction work was supported by Alexander the Great, but it was not completed until the reign of the Emperor Augustus (27 BC – 14 AD), who was now honored alongside Athena. The Ionic temple had no frieze, but instead dentils above the architrave. The plan includes a pronaos, cella and opisthodom. The cult statue of Athena in the cella was based on Phidias’ statue of Athena Parthenos in Athens. The temple had 6 x 11 columns, and measured 37,15 x 19,50 m.
An altar, decorated with semi-columns and reliefs was built to the east of the temple in the 3rd – 2nd century BC, while a gateway (Propylon) on the east side of the sanctuary and the South Hall, which is no longer visible, were added in the 1st century AD.