Ephesus was the most important city in the Roman province of Asia — which meant it was one of the most important cities in the world. At its imperial peak in the second century AD, its population may have reached 200,000 to 500,000 people, making it one of the three or four largest urban centers in the Roman Empire after Rome itself and Alexandria. It sat at the western terminus of the major trade routes from the Anatolian interior and the eastern Mediterranean, on a harbor that connected it to the Aegean sea lanes, and it possessed in the Temple of Artemis one of the seven wonders of the ancient world. What the site preserves today — the most extensively excavated and partially reconstructed ancient city in the world — is an archaeological window into Roman urban life of a quality available nowhere else.