Porta San Sebastiano

Porta San Sebastiano is a gate in the Aurelian Wall of Rome, through which the Via Ardeatina or, more generally, the Via Appia, leaves the city.

Arch of Drusus

Porta San Sebastiano incorporates the so-called Arch of Drusus (or "Arco di Druso"), a marble decorated arch of the Aqua Antoniniana aqueduct over the Via Appia, wrongly identified with the arch said by the sources to have been erected on the death of Nero Claudius Drusus (the father of Claudius) in 9 BC. Its actual history is uncertain, but it could have been absorbed during the construction of the wall as the new Porta Appia (or "Porta San Sebastiano"). It is also possible that this same arch is the arch reported the medieval sources under the name of "arcus recordatiionis".

Other 'arches of Drusus'

#built in honour of Julius Caesar Drusus (son of Tiberius) in the Forum Augustus in 18, in association with an arch in honor of Germanicus
#to Julius Caesar Drusus, perhaps raised after his death either in 23 or 30, this time against the Rostrum in the Roman Forum, in association with an arch dedicated to Tiberius - purely hypothetical.