Asklepieion, also known as Asclepeion, in Kos was an ancient Greek and Roman sacred centre of healing based on the teachings of Hippocrates.
It seems that there has been a healing sanctuary at the site of Asklepieion since prehistory, but the main ruins today are those of later sanctuaries. The most significant was dedicated to Asklepios, who was a deity of health.
Over time, Asklepieion became increasingly popular and visitors would travels from far and wide to experience its healing properties. Thus, the sanctuary was expanded.
Today, the pretty and relatively well-preserved ruins of Asklepieion are set over three levels and include several temples, some Roman baths, gateways and a banqueting hall.
It is worth noting that this is not the most easily accessible site for people with mobility issues. The terrain is quite steep and there are many stairs to climb.