by Giuseppe Agostino Pietro Vasi, 1747

The Porta Chiusa or Porta Clausa was one of the openings in the Aurelian walls of Rome. Almost nothing is known about it, because it was sealed in an unknown but very ancient period (hence the name) and today it is found, almost invisible, at number 4-6 of via Monzambano.

His original name is not known.

It was the southern gate of the Castro Praetorium, the imposing headquarters of the praetorians that the emperor Tiberius built between 20 and 23 to unify in one place the 9 cohorts created by Augustus as a personal guard. Perhaps a minor road started from it which joined both the Nomentana and the Tiburtina. When Aurelian, around 270-273, incorporated the camp into the city walls, the external wall was raised, it was equipped with a new and denser battlement and the north gates (of which the remains can still be seen) and the east gates were walled up. The other door, the western one, opened onto the city.