Ephesus contains successive settlements from the Neolithic, Hellenistic, Roman, Byzantine, Selçuk and Ottoman periods. The property is located at the Aegean Coast of Turkey within what was once the estuary of the River Kaystros, Ephesus comprises Hellenistic and Roman settlements founded on new locations, which followed the coastline as it retreated westward. Excavations have revealed grand monuments of the Roman Imperial period including the Library of Celsus and the Great Theater. Little remains of the famous Temple of Artemis, one of the “Seven Wonders of the World,” which drew pilgrims from all around the Mediterranean. Since the 5th century, the House of the Virgin Mary, a domed cruciform chapel seven kilometers from Ephesus, became a major place of Christian pilgrimage. The Ancient City of Ephesus is an outstanding example of a Roman port city, with sea channel and harbor basin.