Santorini (, pronounced ), classically
Thera (
English pronunciation ), and officially
Thira (
Greek: Θήρα ), is an island in the southern
Aegean Sea, about southeast of
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. It forms the southernmost member of the
Cyclades group of islands, with an area of approximately and a 2011 census population of 15,550. The municipality of Santorini includes the inhabited islands of Santorini and
Therasia and the uninhabited islands of
Nea Kameni, Palaia Kameni, Aspronisi, and Christiana. The total land area is . Santorini is part of the
Thira regional unit.
