It is one of the most important monasteries of Hydra. The male monastery was founded by monks in 1813. During the Greek Revolution of 1821, the monastery of Profiti Ilias was used as a prison and a place of exile  for Theodoros Kolokotronis and other chieftains. Inside the monastery you will admire a rich collection of old books. Located on the northern slopes of Mount Eros at an altitude of 500 meters, it offers a magnificent view over the town and sea.