The main summer destination in northern Greece, Halkidiki is a lush region with three peninsulas located near Thessaloniki. Kassandra, the first leg, is famous for its many tourist resorts and beaches. The second leg, Sithonia, is less touristy and boasts hidden coves, mountainous villages, verdant valleys and isolated beaches. The third leg is Mount Athos, a monastic community where only men are allowed.