It is the third largest island in the Dodecanese. From the prehistoric times it was an important channel of the sea ways that started from the Black Sea and along the shoreline of Asia Minor and the islands of Aegean and reached North Africa.
Ascleipion site: Asclepieion was built in a green area full of cypress trees. During the ancient years, it served as a sanatorium and it was dedicated to Asclepius, son of Apollo, protector of health and medicine. Many significant people taught and worked here, one of them being the father of Medicine, Hippokrates.