One of the islands of Cyclades, Santorini is the most picturesque islands and definitely one of the best places to visit in Greece. Located in the Aegean Sea, Santorini is such a beautiful place that it became the most scenic place in the whole of Greece. The island is also known as Thira, and during the 20th century, it became the best-known Minoan site outside of Crete. The island was the site of one of the largest volcanic eruptions in recorded history.