Kryoneri Observatory (established in 1972) is located in the district of Corinth in the northern Peloponnese at the top of mount Kyllini, close to Kryoneri village. It is equipped with a 1.2 m Cassegrain reflector telescope manufactured and installed in 1975 by the British company Grubb Parsons Co., Newcastle. It is one of the largest telescopes in Greece, with many successful scientific observations during its long operation (scientific observations started in 1975). In 2016, the telescope was upgraded in the framework of the ESA program NELIOTA, to monitor the lunar surface for impacts of near-earth objects.
More information on the telescope and the site can be found here.