Oia is a coastal town on the northwestern tip of Santorini, a Greek Aegean island. The town has whitewashed houses carved into the rugged clifftops, and overlooks a vast caldera filled with water. In a 19th-century mansion, the Naval Maritime Museum has exhibits on local seafaring history, including old figureheads, sailors’ chests and models of old ships. Nearby is the ruined Oia Castle, known for its sunset views.
