They are a group of Greek islands situated in the Aegean Sea. They lie to the south-east to mainland Greece. Only a few of the islands are inhabited. Ermoupolis on the island of Síros is the main town and administrative center of the Cyclades group of islands.
The Cyclades islands consists of over 200 islands and the largest ones are Amorgos, Ándros, Antiparos, Delos, Kimolos, Kythnos, Mykonos, Páros, Serifos, Santorini, and Síros.The islands are mountainous and have exciting terrain for trekking and adventure sports. The Cyclades Islands are an exciting place for yachting, scuba diving and sailing.