The Ephesus Ancient City Ruins, near Selçuk in İzmir Province, offer a remarkable glimpse into Greco-Roman civilization. Once a bustling center of trade and culture, the city is renowned for its marble-paved streets, towering columns, and intricate mosaics. Highlights include the Library of Celsus, one of antiquity’s greatest libraries, the impressive Great Theatre with seating for 25,000, and remnants of the Temple of Artemis, one of the Seven Wonders of the Ancient World. Ephesus also played a key role in early Christianity, with the Basilica of St. John and the House of the Virgin Mary nearby. A UNESCO World Heritage site, it remains a timeless journey into the ancient world.