The Sacred Way of the Asklepeion is one of the best preserved preserved Roman colonnaded streets in Anatolia. In ancient Greece and Rome, an asclepeion was a healing temple, sacred to the god Asclepius, the Grecian God of Medicine. These healing temples were places in which patients would visit to receive either treatment or some sort of healing, whether it was spiritual or physical. The site in Pergamon was founded in the 4 th Century BC around a sacred spring that still flows. Over the next centuries, it became one of the best-known healing centres of the ancient world, second in importance only to Epidaurus in Greece and was also the world's first psychiatric hospital. The influential physician Galen was born in Pergamon and practiced here in the 2 nd Century AD, having first made his medical reputation treating warriors in the gladiatorial games of the city.