The circumference of the walls of Servius Tullius thus contained ten gates. Some of them derived their names from the hills; the Collina from the Collis Quirinalis, which was pre-eminently called _the_ Collis, the Capena probably owed its name to the fact of its leading to Capua, or to the _lucus Capenas_, the grove of the Camenae; the Naevia to the Silva Naevia, the Carmentalis to a sanctuary of Carmentis in the neighbourhood, the Raudusculana to the fact of its being covered with brass, and the Flumentana to the river. The larger circumference of the wall of Aurelian extended as far as the banks of the Tiber, where now no wall exists, because the Borgo and the Castel Angelo are united with the city. On the left bank the foundations of the wall are still the same, though the walls themselves have at different times been entirely restored. Not a stone of the ancient wall now remains, and if there should be any, they belong to the restoration of Honorius. Totilas demolished the greater part of it; afterwards it was repeatedly destroyed and restored again.[15] The gates of the wall of Aurelian were called after the streets from which they led. In former times a large road led from the Porta Collina northward, and branched off into two, the _Via Salaria_ and the _Via Nomentana_; the Via Tiburtina, afterwards called _Valeria_, issued from the Porta Viminalis; and another issued from the Porta Esquilina, which branched off into the _Via Praenestina_ and the _Via Labicana_. The _Via Appia_ and _Via Latina_ began at the Capena, and a road branching off from the Appia was called _Campana_.[16] The _Via Ardeatina_ proceeded from the Porta Raudusculana, while the _Via Ostiensis_ issued from the Porta Naevia or Trigemina, for these two must have been near each other. The _Via Portuensis_ was on the other side of the river, and the _Via Cassia_ ran over the hill; from the bridge _Pons Aelius_, a street ran close by the mausoleum of Hadrian, which probably bore the name of _Via Aelia_; but the matter is obscure. The _Via Flaminia_ proceeded straightway from the Porta Carmentalis to Ariminum.