Santorini (officially Thira) is a volcanic island in the Cyclades group of the Greece Greek islands in the southern Aegean Sea, about 200 km southeast of mainland Greece. It is located between Ios and Anafi islands. Thira is essentially what remained after an enormous volcanic explosion that destroyed the earliest settlements on a formerly single island, and created the current geological caldera. It is famous for dramatic views, stunning sunsets from Oia town, the strange white aubergine (eggplant), the town of Thira, an active volcano, and its beautiful beaches (e.g., Perissa—possibly the best beach in Thira, the black pebble beach of Kamari, white beach, and red beach). There are several villages on Santorini Island. Fira is the main stunning cliff-perched town, featuring all that Oia has, but much more overcrowded. Oia is the place for unforgettable sunsets and is probably the most charming place on the island. Pyrgos is the highest point on the island with picturesque monastery and streets - which can compete with Oia.