Kyrenia is set on the northern coastline of the island. The picturesque harbour is the focal point of the town. The 7th Century Byzantine castle built to defend the town from attacks by the Arabs dominated it. Housed within the walls of the castle is the shipwreck museum, which exhibits one of the oldest commercial ships in the world, which belonged to Alexander the Great. There are a number of places of historical interest within easy reach of Kyrenia amongst which is the well-preserved 12th century Bellapais Abbey and village. Also St. Hilarion Castle, which is perched 2,000 feet above Kyrenia in the Five Finger Mountains, providing the visitor with a panoramic view of most of the northern coastline.