One-day excursion to Mega Spilaio (“Great Cave” in Greek) Monastery. Perhaps the most important pilgrimage of Orthodoxy in Greece. It is located ten kilometers northeast of Kalavryta and causes awe to those who see it. The monastery of Mega Spilaio is dedicated to the Dormition of the Virgin Mary and took its name from its very location. Built at the opening of a large natural cave, at 900 meters, in the mountain range of Helmos, above the steep ravine of Vouraikos river, the monastery gives an even more imposing tone to the wild natural landscape of the area where it is located.
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One-day excursion to Mega Spilaio Monastery


today’s Zachlorou – a shepherdess.
Euphrosyne, as was her name, led them to the Great Cave where the Holy Icon was located. Which depicts the Virgin Mary holding Jesus with her right hand, while he touches with his left hand the left hand of the Virgin Mary and in the right holds the Gospel.
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The history of the Mega Spilaio Monastery



Despite the adventures, the monastery preserves -in its museum, which you will visit if you visit- relics of the Revolution of 1821, a Byzantine banner with the figures of three emperors, sigils, old volumes, even a cross with Holy Wood, and of course the miraculous icon of Panagia Megalospilaiotissa.


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Frequently Asked Questions
Mega Spilaio Monastery is located ten kilometers northeast of Kalavryta in Greece, built at the opening of a large natural cave at 900 meters elevation in the Helmos mountain range, above the steep ravine of the Vouraikos river.
Yes, Mega Spilaio is considered the oldest monastery in Greece. It was founded in 362 AD by brother monks Simeon and Theodore from Thessaloniki, making it the most prevalent date of creation among Greek monasteries.
The Holy Icon at Mega Spilaio is believed to be created from mastic and wax by Luke the Evangelist. It depicts the Virgin Mary holding Jesus, with Jesus touching the Virgin's left hand while holding the Gospel. This miraculous icon is the monastery's most valuable treasure and a major pilgrimage destination.
A one-day excursion to Mega Spilaio is sufficient to explore this historic monastery. The complex features eight floors, a main church with 1653 frescoes, an ornate wood-carved iconostasis from 362 AD, and a museum containing relics, Byzantine banners, and the miraculous icon of Panagia Megalospilaiotissa.
During December 1943, Nazi forces burned and looted Mega Spilaio Monastery. The Nazis murdered all 22 monks in a barbaric manner and threw them off a steep cliff. Despite this tragedy, the monastery was rebuilt and continues to preserve important historical and religious artifacts.
The Mega Spilaio Monastery museum displays relics from the Greek Revolution of 1821, a Byzantine banner featuring three emperors, historical sigils, ancient volumes, a cross made from Holy Wood, and the miraculous icon of Panagia Megalospilaiotissa, though the icon has been partially damaged by fires throughout history.










