Santorini, classically the other name Thera, and officially Thira is an island in the southern Aegean Sea, about 200 km (120 mi) 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 73 km2 (28 sq mi) 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 90.623 km2 (34.990 sq mi). Santorini is part of the Thira regional unit.


Santorini is essentially what remains after an enormous volcanic eruption that destroyed the earliest settlements on a formerly single island, and created the current geological caldera. A giant central, rectangular lagoon, which measures about 12 by 7 km (7.5 by 4.3 mi), is surrounded by 300 m (980 ft) high, steep cliffs on three sides. The island is the site of one of the largest volcanic eruptions in recorded history: the Minoan eruption(sometimes called the Thera eruption), which occurred some 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 and 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.

Useful Telephones:

  • Telephone Area Code+30 22860
  • Municipality of Thira+30 22860 28097
  • Airport of Santorini+30 22860 28400
  • Health Center (Fira)+30 22863 60300
  • Police Station (Fira)+30 22860 22649
  • Port Authority+30 22860 22239
  • Post Office (Fira)+30 22860 22238
  • Tourist Office (GNTO)+30 22860 27199
  • Tourist Police+30 22860 22239
  • Taxis+30 22860 22555
  • Bus Service+30 22860 25404
  • National Bank (Fira)+30 22860 22370
  • Agrotiki Bank (Fira)+30 22860 22261
  • Eurobank+30 22860 25851


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