 The Palatine Gate represents the primary archaeological evidence of the city's Roman phase, and is one of the best preserved 1st-century BC Roman gateways in the world.Together with the ancient theatre's remains, located a short distance away, it is part of the so-called "Archaeological Park", opened in 2006.The name "Porta Palatina" literally refers to a "palazzo" (palace) placed near the gate, but it is not clear what palace is here referred to.