Considered one of the oldest monasteries in Crete, it is located at an altitude of 280 meters, near the village Venerato.  A women’s monastery, its name is linked to the name ‘old monastery.’ During the Ottoman period, it was destroyed by the Turks and the nuns were massacred; but it quickly regained its power. Besides the Kimisi of Theotokou (Virgin Mary) it is dedicated to the Tris Ierarchs, and to Agios (St.) Panteleimon. Its museum holds holy relics, pictures and books of great historical and archaeological value. In the courtyard of the monastery is Agia Mirtia, a perennial tree hidden inside which it is believed that there is an icon of Panagia (Virgin Mary), and is considered miraculous. The monastery is open to the public from sunrise to sunset.