Ephesus was an ancient Greek city located on the west coast of modern-day Turkey. It was founded in the 10th century BC and became an important center of trade and commerce in the region. The city was home to a number of important temples and public buildings, including the Temple of Artemis, one of the Seven Wonders of the Ancient World.

Ephesus was also a center of learning and culture, and it was home to the famous Library of Celsus, which contained over 12,000 scrolls. The city was a hub of the Roman Empire and played a key role in the spread of Christianity. The apostle Paul preached in Ephesus and it was the site of the Council of Ephesus, which was held in 431 AD to discuss the teachings of Nestorius, a Christian bishop.

In the 4th and 5th centuries AD, Ephesus experienced a decline in prosperity and importance, and it was eventually abandoned in the 15th century. The city was rediscovered in the 19th century and has since been excavated by archaeologists, who have uncovered a wealth of information about its history and culture.

Today, the ruins of Ephesus are a popular tourist destination and a testament to the city's rich history. Visitors can explore the well-preserved ruins of the Library of Celsus, the Temple of Artemis, and other public buildings, as well as see the remains of the city's extensive network of roads, aqueducts, and public baths. The ancient city of Ephesus is a fascinating glimpse into the past and a must-see for anyone interested in the history of the Greek and Roman empires.