It lies between the Egaleo Mountain in the northwest and the Cephissus river in the southeast .
Peristeri is located about 4 km ( 2 mi ) northwest of the centre of Athens .
Peristeri lies between the Egaleo Mountain in the northwest and the Cephissus river in the southeast .
Peristeri is located about 4 km ( 2 mi ) northwest of the centre of Athens .