Ionia (īō'nēu) [key], ancient region of Asia Minor. It occupied a narrow coastal strip on the E Mediterranean (in present-day W Turkey) as well as the neighboring Aegean Islands, which now mainly belong to Greece. In its favorable position between the civilizations to the west (e.g., the Greek Aegean) and to the east (e.g., Lydia and Phrygia), Ionia made an immense contribution to Greek art by supplying much of the Eastern influence in the 7th cent. B.C.