Ancient City of EphesusExplore the best preserved marble ruins of the ancient capital of Roman Asia, with its 25,000 seat great theatre. Ephesus is the second largest ancient city of the world! A city where over 200,000 people lived over 3000 years ago. Ephesus, once the most important commercial centre of western Anatolia, was established as a port on the mouth of the river Cayster. Being located on a strategic trade route in Anatolia, Ephesus quickly became one of the most important cities in the world. The city itself and the ruins are all on the side of a fertile valley. The extensive ruins including the theatre, library and gymnasium. Ephesus has been a "centre" throughout the ages. Once a trade centre of the ancient world, a religious centre of the early Christianity and today, a unique tourism centre.