We start with the view of the Aurelian Walls, built between 272 and 275 AD in order to defend the city. At first we visit the inner rooms of the door, where we have the Museum of the Walls, and then we walk along the Regina viarum, one of the most ancient consular streets of Rome, started in 312 BC by the censor Appius Claudius Caecus and then prolonged to the harbour of Brindisi in Puglia. We reach the church of Domine quo vadis, built in the XVII century in the place where, according to tradition, Christ appeared to the apostle Peter. Crossing the area of St. Callixtus catacombs, where there are the crypt of the Popes and the tomb of St. Cecilia, we get to St. Sebastian basilica, built in the IV century above the catacomb galleries housing St. Sebastian’s grave and where there was the memoria apostolorum. Going further we arrive to Maxentius’ villa, where we can admire the imposive remains of the emperor’s private circus, and to the grave of Cecilia Metella, a lady of the highest Roman aristocracy who was buried here in the second half of the I century BC. The mausoleum was later included into the Caetani fortress, as it was the near church of St. Urbano.
