Rome‘s 10th quartiere is called Ostiense and is named for the Via Ostiense.
Ostiense District Rome (Q. X)

The most important tourist attraction in the Ostiense district is the beautiful Basilica of Saint Paul’s Outside The Walls (San Paolo Fuori le Mura).
The railway station Ostiense is also located in the quartiere. From this station there is a cheaper train to the international airport of Fiumicino than the Leonardo Express from Termini.