The main summer destination in northern Greece, Halkidiki is a lush region with three peninsulas located near Thessaloniki. Kassandra, the first finger, or leg, is famous for its many tourist resorts and beaches. The second leg, Sithonia boasts hidden coves, mountainous villages, verdant valleys and isolated beaches. The third leg is Mount Athos, a monastic community where only men are allowed. If you need some convincing on why to visit the beautiful Greek island of Halkidiki, read on.