is an interesting excursion. _Leaving Rome by the Porta Maggiore, we
take the road on the right_, VIA LABICANA, _as we can return by the
other_, VIA GABINA, or PRÆNESTINA. For the first mile the road runs
parallel with the Claudian Aqueduct; then, bending to the left, there
are some very picturesque remains of the AQUA HADRIANA, A.D. 120,
restored by Alexander Severus, A.D. 225, as recorded by Spartianus. At
the second mile is TOR PIGNATTARA, the so-called