Asclepeion, asklepion… Ask-whatever is a hard name for me to learn (maybe because the spelling seems to vary?), but one of the best historic sights at Kos. The name comes from a god Asclepius, who according to Greek mythology was the god of medicine and healing.
So Asklepion was a temple for gods, but apparently also sort of an ancient hospital. It was an institution where healers tried to cure patients and to systematize medicine. It is said that Hippocrates got his medical training at this very asclepieion on Kos.