Mount Athos is a mountain and peninsula in northeastern Greece and an important centre of Eastern Orthodox monasticism.

It is governed as an autonomous polity within the Greek Republic under the official name Autonomous Monastic State of the Holy Mountain.The monastic state of Athos, which occupies the easternmost, wildest ‘leg’ of the three-pronged Halkidiki peninsula, Mount Athos is the second-most important religious place of pilgrimage, after Jerusalem.
The history of Athos dates from birth of the Christian religion. The great Mount Athos was mentioned by Homer as the first Home of Greek Gods, Apollo and Zeus.