Porta Tiburtina is one of the eastern gates of the Aurelian Walls of Rome in the Campagna District, so named for the Via Tiburtina that ran through it. It was adorned with bull skulls, a relic of its origins as an ornamental arch.
Like the Porta Praenestina, the Porta Tiburtina was originally an arch built under Emperor Augustus at the point where there aqueducts, the Aqua Marcia, Aqua Julia, and Aqua Tepula passed over the Via Tiburtina. During the construction of the Aurelian Walls by Emperor Aurelian from 270 to 275, the arch was incorporated as a gate for the walls to mitigate the cost in time and money.
- In Assassin's Creed: Brotherhood, all the gates of Rome are misidentified, though Shaun Hastings's database entries remain factually correct. The gate marked as the Porta Tiburtina is in reality the Porta Metronia while the proper Porta Tiburtina is, in turn, mislabeled as the Porta Salaria. For convenience, this article assumes that, canonically, Shaun Hastings's research is correct while the Animus 2.01 labeled the gates erroneously.