Santorini is an island located 200 km from the Greek mainland in the Aegean Sea. It is also the largest of the circular archipelago and the site of the largest volcanic eruptions ever recorded in history. While the city and the beaches are good enough for spending time The capital of Santorini, Fira, Oia, which is known for its famed sunsets, the sea-filled volcanic crater Caldera, Red Beach, the ancient cities and museums can be visited too.