Mount Athos is a self-governed part of the Greek state, located on the peninsula of Halkidiki Athos in Macedonia. It includes twenty Holy Monasteries and other monastic institutions and is informally designated as “Autonomous Monastic State”.
Since 1988 enlisted in UNESCO World Heritage.
The Athos peninsula is the eastern most and rougher than three individual parallel peninsulas (Kassandra, or Pallini, Logan, central or Sithonia, and Athos or Agion Oros) that make up the peninsula of Halkidiki. This peninsula is covered by Mount Athos, totaling 2033m., It ends at Cape Nymfeo or Akrothoon, hence its name . It lacks rivers and lakes and is linked to Halkidiki via the narrow isthmus of Xerxes, low stripe of land, 2 km., A history of the Persian Wars in 480 BC .. Between the peninsula of Athos and Sithonia or Logan formed the Siggitikos or gulf Mount Athos.
A few miles SE of Mount Athos is the largest pit of Aegean, of which abruptly reaches 1070m from 80m depth.