Exploring the Small Settlements of Potamos, Agrilia, and Agia Irini

The boat cuts through the water of the caldera, and across the way, where Santorini lights up with visitors’ camera flashes, another island remains silent. Thirasia doesn’t advertise itself, doesn’t shout, doesn’t show off. It simply waits, its white houses clinging to the rock, for those who want to see what life in the Cyclades was like before everything changed. Potamos, Agrilia, and Agia Irini are three small settlements that, together, form the island’s most authentic route.

A journey back in time

Thirasia was once part of the same volcanic mass as Santorini, until the great eruption of the Late Bronze Age formed the caldera and split the two islands apart. Since then, Thirasia has followed its own, slower rhythm. Its settlements were built gradually atop the cliff’s plateau, far from the main harbors and tourist routes, preserving a scale of life that has all but vanished on neighboring Santorini.

Potamos, Agrilia, Agia Irini: three villages, one breath

Walking from one settlement to another, you’ll first notice the silence. No scooter buzzes by, no crowd pushes past. Potamos spreads out with low, cubic houses that follow the contour of the land. Agrilia hides narrow lanes where the whitewash gleams in the midday sun. Agia Irini, which gave the island one of its historical names, stands even quieter still, its little church dominating as a landmark for the few passersby.

Between them, dirt roads and paths wind through dry-stone walls, vines bent low to the ground to withstand the wind, and caper plants growing wild in the cracks of the rock.

Cave architecture and life clinging to the rock

One of the most striking features of these settlements is the cave houses — dwellings carved into the volcanic rock, which stay cool in summer and warm in winter. This is a building practice deeply rooted in Cycladic tradition, one that here has survived almost untouched, without the major renovations and tourist additions that have changed the picture elsewhere. The low vaulted openings, white façades, and small courtyards create a sense of intimacy rarely found in more popular destinations.

An unforgettable view

From the heights between the three settlements, the view opens toward Santorini and Oia, with the volcano standing in the middle of the caldera like a silent guardian. The light is constantly shifting — from the silver of morning to the gold of dusk — and the absence of crowds lets you savor it without hurry. It’s a view that on Santorini would cost you a queue for a table; here, it’s yours alone.

Thirasia shows you nothing in a hurry. It lets you discover it, step by step, lane by lane.A resident of Thirasia

An invitation to a slow journey

Potamos, Agrilia, and Agia Irini are not destinations you “check off” in a rush. They are places that ask for time — to sit in the shade, to listen to the wind, to greet a resident passing by with their flock. At a time when the Cyclades are often associated with crowds, Thirasia is a reminder that the authentic beauty of island life lies exactly there: in the quiet, in the simplicity, in time that is never in a hurry.