Porta Ardeatina was one of the gates of the Aurelian Walls in Rome. The gate was built in the time of Nero. It stands at an angle in the Aurelian Walls.
It was placed in a halfway point between Porta Appia and Porta San Paolo, close to the modern arches under which Via Cristoforo Colombo runs.
The gate was probably locked very soon; on the base of the present remains, it can arguably be classified as a simple postern, framed with travertine, whose most interesting characteristic is the presence, both inside and outside the wall, of a stretch of paved road dating from the Roman period, in which the tracks left by carts traffic – that should have been quite intense – are still visible.
Wikipedia https://en.wikipedia.org/wiki/Porta_Ardeatina
Address 1 Via Cristoforo Colombo, Roma 00154, Italy
Coordinates 41°52'23.704" N 12°29'49.42" E