The Cyclades are a group of islands.
The Cyclades ( [ ˈsɪklədiːz ] Κυκλάδες , [ cikˈlaðes ] ) are an island group in the Aegean Sea , southeast of mainland Greece and a former administrative prefecture of Greece . They are one of the island groups which constitute the Aegean archipelago . The largest island of the Cyclades is Naxos . The Cyclades ( Greek : Κυκλάδες Kykládes ) are Greek islands located in the southern part of the Aegean Sea . Irakleia or Heraklia is an island and a former community in the Cyclades , Greece .