Thira Island, commonly known as Santorini, is the southernmost of the Greek Cyclades. It has to be one of the world's most dramatically beautiful islands. Its unique topography is the result of a massive volcanic eruption some 3,600 years ago, which blew the middle out of the island to create a caldera, a volcanic crater filled with deep blue water from the Mediterranean Sea.
For more information on what to see and do in Santorini, see our Santorini Island guide.
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