Porta San Giovanni

History

It consists of a single grand arch built for Pope Gregory XIII in opera forse by Giacomo della Porta or, it is argued, Giacomo del Duca, who had collaborated with Michelangelo on the Porta Pia. The confusion is because the chronology of the era merely speaks of a famous architect called Giacomo. Popular tradition insists the architect was Della Porta, for he died in crowds at the gate, "which he had built" of violent indigestion brought on by melons and watermelons, returning from a trip to the Castelli Romani.

Inaugurated in 1574, it had been necessitated by the reorganization of the whole Lateran area to facilitate traffic to and from southern Italy. Its opening led to the definitive closure of the neighboring and more imposing Porta Asinaria, of Aurelian date, which was by the 1570s proving unable to sustain such a high level of traffic and almost unusable due to the progressive raising of the road level neighboring.

The commemorative inscription above the arch reads:

Its design is conceived as more like the entrance to a villa than as a defensive work, lacking side towers, ramparts, and battlements, and marked instead by pronounced rustication work and by a simple decorative scheme composed of a large bearded head atop the arch on the external side.

The road in fact gives access to the via Campana (now the Via Appia Nuova), which for its first 3 miles follows the route of the ancient Via Asinaria, then that of the Via Labicana. The name via Campana, it is presumed, derives both from the road's ultimate destination of Campania and from the Roman Campagna through which it runs. …