Santorini, Thira or Stroggili (formerly called) is the largest island of a small, circular archipelago, which bears the same name and is the remnant of a volcanic caldera. The whole complex of Santorini islands is still an active volcano (the same as Méthana, Mílos and Nísiros) and probably the only volcano in the world whose crater is in the sea!!The last volcanic activity was in 1950. The municipality of Santorini includes the inhabited islands of Santorini and Therasia, as well as the uninhabited islands of Nea Kameni, Palaia Kameni, Aspronisi and Christiana.
The island was the site of one of the largest volcanic eruptions in recorded history: the Minoan eruption (sometimes called the Thera eruption), which occurred about 3,600 years ago at the height of the Minoan civilization. The eruption left a large caldera surrounded by volcanic ash deposits hundreds of metres deep. It may have led indirectly to the collapse of the Minoan civilization on the island of Crete, 110 km (68 mi) to the south, through a gigantic tsunami. Another popular theory holds that the Thera eruption is the source of the legend of Atlantis.
Today, Santorini is one of the most famous tourist resorts in the world and is famous for its magnificent sunset(themost famous sunset of the world is in Oia) .It is considered to be the most romantic place in the world . The island has a growing reputation as a “wedding destination” for couples not only from Greece but from all over the world.