The Monastery of Agios Dionysios in Olympus is a Greek Orthodox monastery on the slopes of Mount Olympus, the most important monastery in the Pieria Prefecture. It is located at the Enipeas ravine at an altitude of 850 m (40.094°N 22.429°E) The original monastery was established in 1542, was destroyed by the Germans in 1943.

 A new monastery was established at a distance of some 5 km to the northeast of the old one, closer to the town of Litochoro. (40.118°N 22.484°E) . The Agios Dionysios Monastery is a stauropegic monastery, subordinated directly to the Patriarch of Constantinople (Istanbul).

Beside the monasteries Kanalon and Agia Triada, Sparmos it is one of the monasteries located at Mount Olympus.

Originally the name of the ancient monastery was Agia Triada, Holy Trinity, (Greek Αγία Τριάδα). In the course of time, however, the name of its founder, Saint Dionysius of Olympus, has prevailed. The new monastery was named directly after Saint Dionysius.

Old Monastery

The old monastery was founded and devoted to the Holy Trinity by Saint Dionysius in 1542. Surrounded by strong high walls and towered by a watchtower, it resembles a small fortress. During various conflicts it served as a shelter for civilians, but also for fighting troops. Today the visitor can see a ruin from the outside. In its history the monastery has been destroyed and rebuilt several times. It was destroyed in 1821 by Veli Pasha and again by the German Wehrmacht in April 1943. Assuming that the building might serve as a refuge for Greek resistance fighters, the Germans first bombed it and later demolished it with explosives.

Twenty minutes' walk from the old monastery is the chapel of Saint Dionysius. It is located at the Enipeas River in a southeastern direction from the monastery. Who from Litochoro ascends to Prionia comes necessarily by the chapel. It is built under an overhanging rock, just above a spring. It consists of a small devotional space where the saint celebrated the sacred liturgy during his time as a hermit. A small shed served him as a sleeping place.

Source: wikipedia