The School of Agios (St.) Vassilis was founded in 1749. In 1800 it served as a Naval School. Before the Greek Revolution teachers from abroad, mainly from Italy and Portugal, worked here and spread the naval technique and theory. Part of the curriculum was a variety of languages.
In 1927 a private Maritime Academy was founded and in 1930 the building operated as Merchant Marine School, since it became part of the higher technical and theoretical education. It was housed in a building donated by An. Tsamados and Ath. Koulouris. During the 2nd World War the Naval School of Hydra moved to Athens and Piraeus until 1948. Its training ships were "Saint George", the "Electra" and "Eugene Eugenides".
Since 1989 the alternating education was applied, with a total of 2.800 captain graduates. Nowadays these schools have been removed from the Greek educational system.
This monastery was built in 1813. To reach it one goes through a beautiful pine forest. During the Greek Revolution it served as a prison and place of exile for Theodoros Kolokotronis, one of the leaders of the Revolution, and other chieftains. The library with many manuscripts and books is worthwhile a visit.
Within a short distance of the monastery lies the highest mountain of Hydra, Eros, with an altitude of 588. This point offers a panoramic view of the island and the islands of the Argosaronic Gulf.