Porta Palatina

The Palatine Gate is a Roman Age city gate located in Turin, Italy. The gate provided access through the city walls of Julia Augusta Taurinorum from the North side and, as a result, it constituted the Porta Principalis Dextra of the old town.

The Palatine Gate represents the primary archaeological evidence of the city's Roman phase. It is one of the world's best preserved 1st-century BC Roman gateways. Together with the ancient theatre's remains, located a short distance away, it is part of the so-called Archaeological Park, which opened in 2006.

Source: Wikipedia