The first modern settlements took place during the 1920s, but only the opening of the Via del mare and of the railway between Rome and Ostia boosted the development of the area.

In 1940 Italian dictator Benito Mussolini inaugurated a settlement designed by the engineer Dario Pater.

Here were hosted many inhabitants coming from Borgo, which had lost their homes because of the demolition of the spina.

Today Acilia belongs to the X Municipio, the part of Rome that overlooks the Tyrrhenian Sea.

Roman terminal of this line is at Roma Porta San Paolo station, very close to Piramide stop (Rome Metro, Line B) and not too far from the station of Roma Ostiense.