The group of islands of Dodecanese is located in the southeast part of Aegean Sea and it is the frontiers of Greece to Turkey on the east. The name Dodecanese means in Greek twelve islands and refer to the twelve most important of them as there are many more. Dodecanese cover an area of 2.714 sq. km. populated by approximately 200.452 residents. The major inhabited islands of Dodecanese are: Rhodes, Kos, Patmos, Astypalea, Kalymnos, Karpathos, Kasos, Leros, Nisyros, Symi, Tilos and Kastelorizo. Apart from the inhabited islands there are numerous uninhabited rocky islets in the Aegean Sea.