Not only did it destroy the civilization living on the island, but is believed to have wiped out the sophisticated Minoan civilization itself whereby a giant tsunami hit the northern shores of Crete some 110 miles south of the island.
The small island cradles a rich variety of landscapes and villages. Visit traditional architecture in the small village of Mesa Gonia containing a mixture of ruins from the 1956 earthquake and restored villas as well as a winery at the foot of the settlement. Pyrgos is another notable village set inland with its grand old houses, remains of a Venetian castle and several Byzantine churches.
The island has one natural source of fresh water, a small spring situated in a cave behind a small chapel located halfway up the steep footpath between Kamari and the entrance to Ancient Thira. It only provides a small quantity; it is of good quality as it comes from the only remaining limestone outcrop of the pre-volcanic island. Prior to the early 1990's, it was necessary for water to be delivered to the island via tanker from Crete. However, most hotels and homes now have access to water provided by a local desalination plant. While this water is potable, it is still rather salty, so most everyone drinks bottled water while visiting Santorini. Source