It forms part of the Ephesus UNESCO World Heritage Site, and is home to a Byzantine fortress and the ruins of the Basilica of St John.
The earliest archaeological remains at the site date back to the late Chalcolithic and the Early Bronze Age.
[citation needed] The remains of a 2,130-foot (650 m) aqueduct branch built to supply the hill with water probably dates from Justinian's reign.
[4] After the formation of the Turkish Republic in 1923, parts of the basilica were rebuilt with financial support from religious foundations in the United States.
[11] Ephesus was added to the UNESCO World Heritage List in 2015, and today the areas that form part of the site receive millions of visitors every year.