Santorini is a popular Greek island located in the Cyclades islands in the southern Aegean Sea. It formed from volcanic explosions that left the island with steep cliffs surrounding a central caldera filled with water. The island is home to around 7,000 residents spread across 10 villages and has a temperate climate. Santorini has archaeological sites from the Minoan era and was devastated by a massive volcanic eruption around 1600 BC. Tourism is now the main industry, attracting thousands of visitors each year to see the scenic caldera views and sunset from towns like Oia and Fira.