Oia

Oia sits on the northwestern tip of Santorini, strung along about two kilometres of the caldera rim at heights of roughly 70 to 100 metres above the water. The village is also written Ia, and was formerly called Apano Meria, Greek for "upper side"; islanders from here are still known as Apanomerites. Whitewashed houses, blue-domed churches and narrow pedestrian lanes have made it one of the most photographed settlements in the Aegean, and about 1,087 people live there year-round according to the 2021 census.

Location and Setting of Oia

The village belongs to the Cyclades and to the Santorini volcanic group, a ring of islands built from lava and volcanic rock. The caldera it overlooks is a collapsed volcanic crater formed roughly 3,600 years ago in the Minoan eruption of Thera. Across the water sits Therasia, the island that was cut off from Thera when the crater collapsed.

Two harbours serve Oia: Amoudi on the western slope, reached by a staircase of some 300 steps or by donkey, and Armeni on the southern side. Both are working fishing anchorages rather than ferry ports, and many gulet cruises in Greece call in here before the evening crowd builds on the cliff above. Inland, Finikia lies immediately to the east and Tholos about 500 metres north; a road links them, though Oia itself is largely closed to cars.

Oia's History and Architecture

Oia's story is tied to the maritime economy of the Aegean. Frankish and Venetian rule over Santorini began in 1207, and a citadel known as the Agios Nikolaos Kastelli was raised on the northern point of the settlement, one of five kastelia built on the island as refuges from pirate raids. Only part of its watchtower survives today. Over the centuries settlers moved higher up the cliffs for safety and built bell-topped lookout towers, called goulades, as an early warning system. In 1650 the submarine volcano Kolumbo, some seven kilometres northeast of the island, erupted violently and caused heavy loss of life on Thera.

Oia grew wealthy in the nineteenth century as a base for merchants and shipowners whose vessels traded across the Mediterranean, the Black Sea, the Red Sea, the Middle East and Africa. Two housing types date from that period and still define the village: cave houses cut straight into the soft volcanic rock of the cliff, used by crews, and the larger neoclassical captains' mansions, the kapetanospita, built by owners and merchants. Most of the churches were founded by seafaring families. On 9 July 1956 the Amorgos earthquake, magnitude 7.5 or above, struck at 05:11 and left Oia in ruins along with much of the island; the village was rebuilt slowly over the following decades and only became a major tourist destination in the later twentieth century.

Oia Today

The kapetanospita and cave houses now hold hotels and restaurants, and the village is among the busiest points on an island that receives an estimated two million visitors a year. Restored windmills stand at the western end, and the best known of the churches is Panagia Platsani on the main square. The density of chapels in so small a place comes from the shipping trade: families built them in the hope of a safe return.

The Naval Maritime Museum, housed in a restored nineteenth-century mansion in the village, covers that seafaring past with nautical instruments, charts, ship models and archive documents.

Outdoors

The sunset view is what draws the largest crowds, watched from the ruins of the Agios Nikolaos castle at the highest point of the village, which also looks out over the whole caldera.

The caldera-rim footpath between Fira and Oia is the main walk on the island: roughly 10 kilometres, three to four hours at an easy pace, passing Firostefani, Imerovigli and stretches of vineyard on the way. By road the two towns are 11 kilometres apart.