The Great Cave is the historic monastery of Kalavryta. One of the most important shrines of Orthodoxy in the Greek area.
The monastery is located ten kilometers northeast of Kalavrita on the road that connects national Patras – Athens to Kalavryta, and is built in the opening of a large natural cave (hence its name) the mountain of Helmos, above the steep gorge Vouraikos river at 940 meters altitude. In perfect harmony with the wild and impressive landscape the eight-storey complex of the monastery captivates even the most indifferent visitor. The church of the monastery dug into the rock, is a cruciform church, registered with two splints. The main temple has murals of 1653, remarkable marble floors, wooden temple etc. while the narthex frescoes from the early 19th century.
The Museum of the Monastery outside of the important relics of the Greek revolution, has a rare banner with forms of three Byzantine emperors, singilia handwritten in excellent miniatures, precious golden crosses with Holy Wood, engravings, portraits, Gospels on parchment, the scapular Chrysanthos Notaras, gold-embroidered epitaph antimensia, Byzantine icons of great value etc. Great value is the library with more than 3,000 volumes and numerous manuscripts. In a special chapel kept, reliquaries with many Saints bones and skulls of the founders of the monastery.
Prominent among the relics of the monastery holds the Sacred Miraculous Image of Our Lady of Megalospilaiotissas, which is the work of St. Luke (one of the three who created and preserved until today).