Santori is an island in the southern Aegean Sea, about 200 km (120 mi) southeast from Greece’s mainland. It is the largest island of a small, circular archipelago which bears the same name and is the remnant of a volcanic caldera.
Santorini is essentially what remains after an enormous volcanic explosion that destroyed the earliest settlements on a formerly single island, and created the current geological caldera.
The mild activity of the volcano after this major eruption has built up two small islands within the caldera. Mild and dry climate and the almost continuous sunshine create year-around conditions which are perfect for tourists.