Panagia Ekatontapiliani

Start with your feet. The ground here is stone, worn smooth by centuries of shoes, sandals and bare soles. Step from the white glare of Parikia's harbour into the courtyard, and the temperature drops. The light softens. Somewhere a bell may sound, and the noise of the port seems to fall away behind the thick outer wall. You are standing at the threshold of one of the oldest working churches in Greece, a place that has served as a house of prayer for well over a thousand years.

The name sounds like a riddle. Ekatontapiliani means, roughly, the Church of a Hundred Doors. The building also carries an older name, Katapoliani, which most scholars link to its position near the old town. Over time, the more poetic name won. Locals tell a story to explain it. They say you can count ninety-nine doors and openings here. The hundredth door is hidden, and it will only appear on the day Constantinople, the old Byzantine capital, becomes a Christian city once again.

That is folklore, not history. But it tells you something true about this place. For the people of the Cyclades, the scattered island group of the central Aegean, this church has always been bound up with the memory of Byzantium, the eastern Christian empire that ruled from Constantinople for more than a thousand years. Its stones carry that memory. Its dedication is to the Panagia, the All-Holy, the name Greek Orthodox Christians use for the Virgin Mary.

The founding story begins with a famous traveller. According to tradition, Saint Helen, the mother of the Roman emperor Constantine, stopped on Paros during her voyage to the Holy Land in the fourth century. She prayed here and vowed to build a church if her journey succeeded. She went on, the tale says, to find the True Cross in Jerusalem. Whether she truly landed here is uncertain. What is clearer is that a Christian church stood on this spot very early, perhaps on the site of an older pagan building.

The church you see today owes most of its shape to a later rebuilding in the sixth century, during the reign of the emperor Justinian. This was the same age that produced the great church of Hagia Sophia in Constantinople. Look up at the domes and the arched spaces, and you can sense a family resemblance. The plan is a cross under a central dome, a design that became the standard pattern for Orthodox churches across the eastern Mediterranean.

Now for the best-known legend of all. The story says that a master architect sent his young apprentice to Paros to build the church. The apprentice, often named Ignatius, created something more beautiful than his teacher expected. When the master arrived and saw the work, jealousy overcame him. The two men struggled on the roof, and both fell to their deaths. It is a tale of pride and talent, told and retold on the island for generations.

Here is a detail many visitors walk straight past. In the courtyard, carved into the bases of columns, are two small crouching figures. Local tradition identifies them as the master and the apprentice. One figure is said to pull at his beard in regret. The other holds his head, perhaps from the fall. Historians cannot confirm who the carvings really show. Still, once you find them, it is hard not to see the old story in the stone.

Look closely at the building material. Paros has been famous since ancient times for its marble, a fine, pale stone that sculptors prized across the Greek world. Inside and around the church, you will notice pieces of carved marble that clearly came from older structures. Builders in late antiquity often reused columns, capitals and blocks from ancient temples. So a Christian sanctuary here quietly holds fragments of a much older, pre-Christian island.

The church is really a small complex rather than a single room. Alongside the main church stands the chapel of Saint Nicholas, which many consider among the oldest parts of the site. Look for its ancient columns, which once belonged to a different world entirely. Nearby is the baptistery. Here is the second surprise. Its font is shaped like a cross and sunk into the floor. Early Christians were baptised by full immersion, stepping down into the water as adults.

Fonts like this one are rare survivals. In later centuries, as infant baptism became the norm, churches used small basins instead. Standing beside this sunken cross, you are looking at a practice from the very first centuries of Christianity in the Aegean. Imagine the scene: lamplight, cool water, a convert descending the steps and rising again, changed. Few places in Greece let you stand so close to that early ritual.

The church has not always been peaceful. Over the centuries, the islands suffered earthquakes, pirate raids and changes of rule. The building was damaged, repaired and altered many times. Later additions covered parts of the original structure. In the twentieth century, a major restoration removed many of these layers and brought back much of the earlier Byzantine character. What you see is a careful balance between ancient fabric and modern repair.

This is still a living church, not only a monument. Every year on 15 August, the Feast of the Dormition, when Orthodox Christians mark the falling asleep of the Virgin Mary, pilgrims come from across Greece. The courtyard fills with families, candles and the sound of chanting. The icon of the Panagia is honoured with deep devotion. On an ordinary day, you may still see locals stop to light a candle, cross themselves and kiss an icon before going on with their errands.

Before you leave, pause once more in the courtyard. Listen for the harbour beyond the wall, the scooters and the ferries. Then look at the pale stone around you, the arches and the old columns. Perhaps you will try to count the doors yourself. Whether you reach ninety-nine or not, notice how the shade, the stone and the quiet hold you for a moment longer. As you walk back into the bright streets of Parikia, carry that cool stillness with you.