The exact date of the establishment of the monasteries is unknown. By the late 11th and early 12th centuries, a rudimentary monastic state had formed called the Skete of Stagoi and was centered around the still-standing church of Theotokos (mother of God).[2] By the end of the 12th century, an ascetic community had flocked to Meteora.

In 1344, Athanasios Koinovitis from Mount Athos brought a group of followers to Meteora. From 1356 to 1372, he founded the great Meteoron monastery on the Broad Rock, which was perfect for the monks; they were safe from political upheaval and had complete control of the entry to the monastery. The only means of reaching it was by climbing a long ladder, which was drawn up whenever the monks felt threatened.

At the end of the 14th century, the Byzantine Empire‘s reign over northern Greece was being increasingly threatened by Turkish raiders who wanted control over the fertile plain of Thessaly. The hermit monks, seeking a retreat from the expanding Turkish occupation, found the inaccessible rock pillars of Meteora to be an ideal refuge. More than 20 monasteries were built, beginning in the 14th century.[2] Six remain today.

In 1517 Theophanes built the monastery of Varlaam, which was reputed to house the finger of St John and the shoulder blade of St Andrew.

Access to the monasteries was originally (and deliberately) difficult, requiring either long ladders lashed together or large nets used to haul up both goods and people. This required quite a leap of faith – the ropes were replaced, so the story goes, only “when the Lord let them break”.[11] In the words of UNESCO, “The net in which intrepid pilgrims were hoisted up vertically alongside the 373 metres (1,224 ft) cliff where the Varlaam monastery dominates the valley symbolizes the fragility of a traditional way of life that is threatened with extinction.”[12] Until the 17th century, the primary means of conveying goods and people from these eyries was by means of baskets and ropes.[13] In 1921, Queen Marie of Romania visited Meteora, becoming the first woman ever allowed to enter the Great Meteoron monastery.[14]