In centuries past, their place of worship brought them solitude and protection from unwanted trespassers.
Today, the Orthodox monasteries are one of the most popular destinations in all of Greece.
Only a few hours from Athens at the fringe of the Plain of Thessaly, the town of Kalambaka plays host to Meteora's spectacular mountaintop attractions.
Windswept monoliths rise abruptly from the earth, with vertical cliffs forming a dramatic backdrop against the flat fields around them.
The picture-perfect vistas have been the inspiration for countless film and TV backdrops, including the Eyrie kingdom in HBO series "Game of Thrones."
Historical playground
But beyond the monasteries and mountains, Meteora is far from being just a visual delight.
This little-known terrain holds claim to some of Europe's most fascinating history, as well as a heap of exhilarating outdoor activities.
Just 2.5 miles outside of Kalambaka is Theopetra Cave, a stunning archaeological site that holds evidence of continuous human inhabitation for over 130,000 years.
The transition from Neanderthal to Homo sapiens is indicated in the layers of soil, and remarkably one of the world's oldest known man-made structures lies at the cave entrance: a wall believed to be 23,000 years old.
It's a phenomenal attraction that anywhere else in the world would be enough to warrant travel to the area, yet this cave is often overshadowed by the even more impressive and awe-inspiring buildings nearby.
Suspended in the air
During the 14th century, the great monk Athanasios Koinovitis brought a group of devout followers from Mount Athos to Meteora, in search of a group of ascetic hermits that had developed a religious stronghold in the region.
He was mesmerized by the hermits' free-climbing skills that had allowed them to live in the caves and fissures high above the ground, and saw an opportunity to create a convent where his flock could meditate and worship in peace.
Employing the hermits as climbing mentors, the new visitors conquered the surrounding mountains and set about creating their own holy haven.
It was then, from 1356 to 1372, that the first
Great Meteoron Monastery was born.
Meteora means "suspended in the air," and the way the religious house clung dangerously to the formidable peak quickly gave its name to the entire district.
Years later when the Turks advanced on northern Greece, more monks escaped persecution by climbing the mountains to safety.
Over time 24 monasteries were built, with the steep pillars providing protection from the warriors below.
A network of ropes, pulleys, baskets and ladders were used to lift worshipers and supplies into the monasteries, and these were raised in times of danger to deny access to anyone who posed a threat.
The method worked, and the Orthodox monks easily survived centuries of war and battles.
Today, six of these monasteries remain, segregated between male monks and female nuns, and visitors are welcomed with typical Greek hospitality.
Adventure tourism
Beyond the religious quarters, Meteora offers more than picturesque scenery and an education in ancient history. It's developed a reputation as Greece's adventure capital.
While most visitors opt for the popular driving and hiking excursions, always with a focus on visiting the monasteries, more active tourists look for alternative ways to reach for the heavens.
Those dramatic sandstone peaks have helped make Meteora a thriving hub for rock climbers from around the world.
The routes vary between bolted and traditional, and are suitable for absolute beginners through to professional climbers.
With many of the crags are accessible via a short hike from town, it's not uncommon to spot people hanging from the rocks just below the monasteries.
For those seeking something a bit different, a thrilling Via Ferrata, or "iron road" leads to the top of the Great Saint, the tallest mountain in Meteora.
A rocky trail leads towards the summit of the quarter-mile-high peak, with climbing ropes and chains used to assist in a safe climb and descent.
During the summer rafting has become another worthwhile adrenaline rush, and while it doesn't compare to the powerful rapids found elsewhere in Europe, it's still a heart-pumping pursuit.
Mountain biking rounds out the common activities, and for those that travel in winter, skiing and snowboarding can be found only a few hours from town.
Local destination company
Visit Meteora provides guided tours and advice for the region, or experienced hikers and climbers can visit independently.
Year-round destination
Summertime brings immense hordes of tourists, with the trails, hotels and restaurants brimming with an energetic vibe.
Kalambaka can feel packed with visitors. However, neighboring Kastraki village offers a quieter, more intimate environment beneath the sandstone.
The higher temperatures and long days are the obvious attraction, but a mild climate actually means winter can be the best time to visit Meteora.
Without the summer crowds it's easy to find the monasteries virtually empty, and prices for accommodation drop.
This region of Greece has been attracting pilgrims and adventurers for thousands of years and, with the growth of adventure tourism, it's set to continue providing thrills both spiritual and visceral.
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