Hill of Kastri, west of which the main town actually starts. Over the hill, you should visit the ruins of an old basilica with many mosaics. Just on the east is the picturesque chapel of Agia Paraskevi, part of which is built into the rock. The Church overlooks the nearby scenic port of Hersonissos with its beautiful lighthouse. Excursion boats run daily from the port, making trips to Dia island and the surrounding coast.