The Cyclaes (Greek Κυκλάδες) are a Greek island group in the Aegean Sea, south-east of the mainland of Greece; and an administrative prefecture of Greece. They are one of the island groups which constitute the Aegean archipelago. The name refers to the islands around (κυκλάς) the sacred island of Delos. The Cyclades is where the native Greek breed of cat (the Aegean cat) first came from.