- the easternmost of three prongs of the peninsula of Chalcidice, in northeastern Greece: site of an autonomous theocracy constituted of 20 monasteries. 131 sq. mi. (340 sq. km); about 35 miles (56 km) long.
- a headland on this peninsula. 6,350 feet (1,935 meters) long.
- a mountainous peninsula in NE Greece: location of the Monastic Republic of Mount Athos, an autonomous administrative division of Greece since 1927; inhabited by Eastern Orthodox monks in about 20 monasteries, some founded in the 10th century; prohibited to women and children. Pop: 1942 (2001)