Monastery of Saint John the Theologian

Feel the stone under your feet first. It is worn smooth, almost polished, by centuries of sandals, boots and bare soles. Above you, grey walls rise in heavy, uneven blocks, topped with battlements that look more like a castle than a church. The wind comes up from the Aegean, carrying salt and the faint smell of wild thyme. Somewhere inside, a bell may sound. You are standing at the gate of the Monastery of Saint John the Theologian, crowning the hill of Patmos.

To understand why this place exists, we need to go back to the first century. According to Christian tradition, John, the follower of Jesus known as John the Theologian, was exiled to this small island by the Roman authorities. Here, the tradition says, he received the visions that became the Book of Revelation, the last book of the Christian Bible. A cave on the slope below, between the harbour and this hill, is honoured as the place where it happened. That is why pilgrims have come to Patmos for so long.

The monastery itself came much later. In 1088, a monk named Christodoulos, now remembered as Saint Christodoulos, received permission from the Byzantine emperor Alexios the First Komnenos to build here. The Byzantine Empire was the eastern, Greek-speaking continuation of the Roman world, ruled from Constantinople. The emperor's grant came as a formal document sealed in gold, called a chrysobull. Here is the first surprise: that original document still survives. It is kept in the monastery's own archive, more than nine centuries later.

Locals and old tradition say that Christodoulos built on the site of an ancient temple to Artemis, the Greek goddess of the hunt. You may hear that some stones from the older temple were reused in the walls. Treat this as a story passed down rather than settled fact. Still, it is a fitting idea. On this island, one sacred layer often sits on top of another, and the hilltop has drawn people looking for something beyond everyday life.

Now look again at those walls. They are not decoration. In the eleventh and twelfth centuries, and for long after, the Aegean was dangerous. Pirates raided islands, took captives and stole whatever they could carry. So the monks built a fortress. The walls are thick, the openings are narrow, and the gate is small and easy to defend. Over the centuries the defences grew, with towers and buttresses added as threats changed. What you see is a building shaped by fear as much as by faith.

Walk through the entrance and the mood changes. The noise of the outside world drops away. You move through narrow passages, small courtyards and stairways at odd angles. The monastery was not built in one plan. It grew room by room, chapel by chapel, over hundreds of years. That is why the corridors twist and why the levels do not always line up. Notice how the white plaster and the bare stone take turns, and how the light falls in sharp bright patches.

The heart of the complex is the main church, called the katholikon. Inside, it is dim and warm with the smell of beeswax and incense. Gold catches the candlelight on the carved wooden screen covered with icons, which separates the altar from the congregation. The walls carry painted scenes of saints and stories from scripture, layered through different periods. Let your eyes adjust slowly. Details appear the longer you stand still, faces and hands and patterned robes coming out of the shadows.

Here is the second surprise. Just off the main church is a small chapel dedicated to the Virgin Mary. Its wall paintings are among the oldest in the monastery, dating to the twelfth century. They were hidden for a long time under later layers of paint and were uncovered only in modern times. Nearby, a chapel holds the relics of Saint Christodoulos himself. So the founder still rests inside the house he started. For the monks, this is not history. It is a living presence.

And this monastery is very much alive. A community of Greek Orthodox monks still lives and prays here, following a daily rhythm of services that has continued for centuries. You are a guest in their home. That is why modest dress matters, with shoulders and knees covered, and why voices drop inside the church. If you see a monk crossing a courtyard, you are seeing the original purpose of the building, still at work after more than nine hundred years.

For scholars, the real treasure may be the library. Over the centuries, the monastery gathered a large collection of manuscripts, early printed books and documents. One famous possession is a group of leaves from a sixth-century Gospel written in silver and gold letters on purple-dyed parchment. Purple was the colour of emperors, so this was a book of extraordinary luxury. Other leaves from the same book are scattered across libraries in other countries. A selection of the monastery's treasures can be seen in its museum.

In 1999, UNESCO added the monastery to its World Heritage list, together with the Cave of the Apocalypse and the old town around you, called Chora. The town and the monastery belong together. Look down from the walls and you will see whitewashed houses pressed close to the fortress, as if seeking its protection. For centuries, that is exactly what they did. Wealthy merchants and sea captains built mansions here, and the town grew in the shadow of the monks' walls.

If you come during Orthodox Easter, you may see something unusual. On Holy Thursday, a ceremony called the Washing of the Feet takes place in the town square. The abbot washes the feet of twelve monks, repeating the gesture Jesus made for his disciples at the Last Supper. Islanders and visitors crowd around to watch. It is one of the moments when the monastery's inner life spills out into the streets of Chora, and the whole town takes part.

Before you leave, find a spot where you can look out from the hilltop. Below you, the island spreads in folds of brown and green, with small bays of deep blue water. On a clear day, other islands sit on the horizon like grey shadows. As you walk back down through the narrow lanes, listen for the bells and the wind. Touch the cool stone of the walls once more. The monks will still be here tonight, and tomorrow, as they have been for centuries.