Kastro’s sublime citadel, including a Middle Byzantine tower, rises over a long bluff overlooking lake and mountain. The outer ramparts are cluttered with cannon balls and elegant Ottoman carvings. Within, it holds the restored Fetiye Cami (Victory Mosque), built in 1611 after a failed Greek uprising that saw Christians expelled from the citadel, and the Tomb of Ali Pasha . The decorative iron railing is a recent copy of the original, which was removed during WWII.