The UNESCO World Heritage Site in Türkiye that preserves the ancient Greek and Roman city of Ephesus is Ephesus.
Ephesus developed near the Aegean coast and became one of the major cities of the ancient Mediterranean. Its surviving remains include the Library of Celsus, the Great Theatre, the Temple of Hadrian, and the Terrace Houses. The city was especially important during the Hellenistic and Roman periods, when it served as a major commercial and religious center.
UNESCO inscribed Ephesus in 2015. The property includes archaeological areas associated with the ancient city as well as the nearby Ayasuluk Hill, where the Basilica of Saint John and the remains of Seljuk-era settlement can be found.
Ephesus is often confused with Troy, another UNESCO site in Türkiye. Troy is associated with the legendary Trojan War and its archaeological mound, whereas Ephesus is celebrated for a long urban history extending from Greek settlement through Roman and later periods.