Chalkidiki or Halkidiki, is one of the prefectures of northern Greece located in the southeastern portion of Central Macedonia. The Cholomontas (the Cholomon mountains) lie in the north central part and consists of a large peninsula in the northwestern Aegean Sea, and is shaped like an open hand with three 'fingers': Kassandra, Sithonia, and Agion Oros (Holy Mount), famous for its remote monasteries.
The capital of Chalkidiki is Polygyros, located in the center of the peninsula. The most populous municipalities of Polygyros are Moudania, Kallikrateia, Polygyros, and Kassandra. Some of its largest towns are Nea Moudania, Nea Kallikrateia, and the city of Polygyros.
In 2003 the first draft of the European constitution was presented in the holiday resort of Porto Carras in Sithonia.
Athens (Greece), Hersonissos (Chersonissos), Malia, Chania, Rethymno, Iraklio (Heraklio) Crete, Santorini, Mykonos (Myconos), Rhodes, Kos, Lesvos, Corfu, Samos, Zakynthos and other popular destinations in the Greek islands, as well as Halkidiki, Thessaloniki and other parts of mainland Greece.