The Cyclades is a group of Greek islands with beautiful, white sandy beaches, rugged mountains and lush valleys. Glamorous Santorini and Mykonos attract the jetset, while lesser-known isles, such as Milos and Naxos, are the perfect places for beach lovers. Ruins, including the 11th-century Dorian settlement and volcanic ash-preserved Ancient Akrotiri in Santorini, amaze those with a bent for ancient history. Sifnos' cuisine wins it admirers. Hydrofoils, ferries and catamarans connect the islands.