Peristeri is a city and a suburban municipality in the western part of the Athens agglomeration, Greece. With 133,630 inhabitants, it is the seventh-largest municipality and city of Greece by population.

Motorway 1 (code: A1, also known as Athens-Thessaloniki-Evzonoi Motorway, and previously as Patras-Athens-Thessaloniki-Evzonoi Motorway the 2nd longest motorway in Greece with a length of 550 km. It is the principal north–south road connection in Greece, connecting the country's capital Athens with the regions of Thessaly and Macedonia, as well as the country's second largest city, Thessaloniki. It starts from Neo Faliro in Attica and continues north to reach the Evzonoi border station, on the Greek border with North Macedonia.