Built of granite and marble wrapped in origin, it measures 13.97 meters high, 5.70 m wide and 8.67 m corresponding to the arc light. It is believed to have a triumphal character, although it could also serve as a prelude to the Provincial Forum. Immersed in modern constructive tangle and masked by the neighboring houses, this arch stands majestic and admired by travelers and historians of all time. His name is arbitrary, since the commemorative inscription was lost centuries ago.