THE GREEK ISLANDS total over 2,000 islands, from tiny atolls to the vast Crete, diversity making Greece a multi-faceted destination. Steeped in history, the Greek islands boast idyllic beaches against a natural Mediterranean backcloth. Fishing villages have retained their authentic souls and holiday villas have preserved the architecture of typical Greek houses, all on on floor, all in beautiful white. More contemporary, they now offer pools with unimpeded views of the Mediterranean Sea. Underwater diving, watersports, hiking and biking excursions are the main activities proposed by the Greek islands for lovely "green" vacations. Though for fans of partying, Mykonos organizes the summer's most captivating evenings and welcomes the international jet-set to the pools of luxury villas, all with the services of the world's most famous DJs.