Santorini’s top attraction, without a doubt, is the Caldera — the vast volcanic field that forms the island’s famous volcanic landscape.

The Caldera is the remnant of a massive volcanic eruption that occurred about 3,600 years ago and shaped the unique geography of Santorini today. It is a large underwater basin with steep slopes, surrounded by settlements that “hang” on the cliffs — such as Oia, Fira and Himeros. The view from the caldera, especially from its rim, is one of the most impressive in the world, as the blue of the Aegean Sea “blends” with the black, red and white volcanic rocks.

In addition to the magnificent landscape, the caldera is also the center of the island’s natural activity, with the active volcano located in the sea, offering interesting boat trips to the thermal baths and small islands in the area.  Hiking along the caldera rim trails, such as the Fira – Oia trail, allows visitors to experience first-hand the unparalleled beauty and intense geological history of Santorini.

Ultimately, the caldera is not just a natural attraction — it is the heart and soul of the island, combining the power of nature with human cultural presence, making Santorini one of the most unique and enchanting destinations in the world.