Delos is a small cycladic island of Greece and is situated close to the cosmopolitan island of Mykonos. According to Greek mythology, in the beginning Delos was a sole rock named 'Asteria' or 'Ortygia'; it didn't have a fixed position but was floating and wandering around oceans and seas.
The island of Delos was discovered by the beautiful mortal Leto, one of Zeus' mistresses who, after a lot of travelling, settled on the island to give birth to her twins, the Olympian gods Artemis and Apollo. Only then could the island obtain a fixed spot right in the center of the Cyclades and received the name Delos ("the unconcealed one").
With the birth of Apollo, the god of the Sun, immediately the sun blazed down the island and the island of Delos was declared the sacred Island of Antiquity.