Santorini is a volcanic island in the Cyclades group of the Greek islands. It is famous for its dramatic views, stunning sunsets, white-washed houses, and blue-domed churches perched on cliffs overlooking the Aegean Sea. The island is shaped like a crescent with the caldera in the middle, created by one of the largest volcanic eruptions in history. Beyond its picturesque landscapes, Santorini offers unique beaches with red, black, and white volcanic sand, renowned wineries producing distinctive wines from grapes grown in volcanic soil, and archaeological sites like the prehistoric settlement of Akrotiri.