One of the Cyclades, a group of Greek islands with beautiful white sandy beaches, rugged mountains and lush valleys, Mykonos is a cosmopolitan haven for the jetset. It's also a party destination for serious clubbers and an upscale gay set. As its popularity has increased and Mykonos has become more expensive, strict regulations have ensured that the island keeps its picture perfect vistas of whitewashed walls. More than 300 days of sunshine plus turquoise skies and seas add to the idyllic scenery.