Polygyros is a town and municipality in Central Macedonia, Greece. It is the capital of Chalkidiki.Polygyros town (pop. 5,040 at the 2001 census) is built in the shape of an amphitheatre on a plateau on the south west side of the mountain Cholomontas. It is south of Greek National Road 16 (Thessaloniki - Arnaia). Polygyros is located SE of Thessaloniki, NE of Nea Moudania, NW of Sithonia and SW of Arnaia. The municipal unit (the municipality before 2011) has a population of 10,721 inhabitants and a land area of 470.933 km². Other large villages in the municipal unit are Kalývai Polygýrou (1,136), Ólynthos (1,131), Taxiárchis (1,070), and Vrástama (793).