Santorini is the last of the Cyclades island to the South.
It was one island named Stroggili (circle in Greek) until about 1645 BC, when the volcano in the middle of the island erupted and Caldera was created. The two volcanic islands appeared much later from various eruptions starting 157 BC and the last one to be in the 20th century (1950).
Between Fira and Imerovigli, one of the spots with the best view on the island. Firostefani offers several hotels of all kind to stay and enjoy the sunset and restaurants for dinner.