The Castle of Chios is a medieval citadel in Chios town on the Greek island of Chios.
Wikipedia https://en.wikipedia.org/wiki/Castle_of_Chios
Address 17 Αυτοκράτειρας Άννας Κομνηνής, Χίος 82131, Greece
Coordinates 38°22'25.234" N 26°8'9.795" E