Holargos is a town and a suburb in the Athens urban area, Greece, located northeast of the Athens city proper and about 6 kilometers away from Syntagma Square. Since the 2011 local government reform it is part of the municipality Papagou-Cholargos, of which it is the seat and a municipal unit. The municipal unit has an area of 3.950 km2. The main thoroughfare is Mesogeion Avenue, which connects Cholargos with central Athens and the northern beltway Motorway 6.

Chalandri is a town and a suburb in the northern part of the Athens agglomeration, Greece. It is a municipality of the Attica region.