The cells of the Holly Fathers are rooted for centuries in a rocky land, 5 km over Nikiana to Alexandros, inside a cave near the area of Skaros. It is one of the oldest Christian monuments of the island. Religious sources mention that in this place 3 Holly Fathers who arrived to the island after the A Ecumenical Synod to Nice of Bithynia in 325 a.c, took monastic vows, found a shelter in the cave and preached Hevangelion until the end of their lives. In a cave nearby, you will meet their graves and the small church of the Hermitage, built to their honor.