It is located within the borders of the Donduran Village in the Yenipazar District of Aydın. Strabon, one of the authors of the Ancient Period, mentioned about Orthosia as a Karia city. The city which was attacked by the Kimmers in the 7th century BC, passed under the sovereignty of Lydia after the victory of Alyattes, the king of Lydia, against the Kimmers; it participated to the Ionia Union in the 6th century BC and then passed under the sovereignty of the Persians as the other Anatolia cities. The theatre and the Byzantine buildings still remain standing. Well-protected tombs and graves on the necropolis show qualified workmanship.