Ephesus developed within a landscape occupied long before the classical Greek city. Bronze Age settlement on Ayasuluk Hill may be connected with Apasa, a capital known from Hittite records, though the identification remains debated. Greek tradition credited the Ionian leader Androclus with founding Ephesus, and the sanctuary of Artemis became central to the community. Lydian and Persian rulers controlled the region in turn. The enormous Temple of Artemis, rebuilt after a fire in 356 BCE, was later counted among the Seven Wonders of the ancient world.

Changing shorelines shaped the city’s history. Around 300 BCE, Lysimachus, a successor of Alexander the Great, relocated residents to a new planned settlement between Mounts Pion and Coressus as the older harbor environment changed. Walls, streets, public spaces, and drainage organized the new city. Ephesus entered Roman control and became capital of the province of Asia, flourishing especially under the empire. Its harbor linked Aegean shipping with roads into Anatolia, while taxes, administration, pilgrimage, trade, and entertainment supported a large and diverse population.

Roman Ephesus contained baths, fountains, temples, markets, houses, a stadium, and a theater capable of holding thousands. The Library of Celsus, completed in the second century CE as a monument and tomb, later became the site’s most recognizable facade. Terrace houses preserve mosaics, frescoes, marble panels, and evidence of elite domestic life. Inscriptions document civic offices, benefactors, associations, and imperial cult. The city’s carefully paved streets reveal how water supply and drainage supported monumental urban life as much as the famous public buildings did.

Ephesus also became important to early Christianity. Paul lived and preached there, and the Acts of the Apostles describes conflict involving devotees and artisans connected with Artemis. Christian tradition associated the city with John and Mary. The Council of Ephesus met in 431 and affirmed the title Theotokos for Mary, giving the city a lasting place in church history. Earthquakes, epidemics, invasions, and the progressive silting of the harbor weakened the lower city. Settlement shifted toward Ayasuluk Hill, where Byzantine, Seljuk, and Ottoman monuments formed new centers.

The Austrian Archaeological Institute began sustained excavation in 1895, following earlier work by British researchers at the Artemision. Excavation, anastylosis, and conservation have re-erected portions of monuments such as the Library of Celsus while leaving other structures fragmentary. The broader UNESCO property, inscribed in 2015, includes the ancient city, Ayasuluk Hill, the Artemision, and the House of the Virgin Mary. Ephesus matters as a long historical landscape rather than a frozen Roman ruin: environmental change, pagan and Christian pilgrimage, political succession, archaeology, and modern reconstruction all shaped what visitors see.