On Kefallos beach, the ruins of Christian Basilica of Agios Stefanos and the picturesque islet opposite the port are the main atractions. Kastri islet it is totally rocky and barren with little vegetation. Some remains of an old castle lie on top of this rocky islet that used to guard the bay from enemies and pirates. On the other side, there is a small chapel in blue and white colors dedicated to Saint Nicolas, the saint protector of sailormen. You can reachthe island by boat or swimming from Kefalos beach.