_The Porta San Sebastiano_ has two fine semicircular towers of the Aurelian wall, resting on a basement of marble blocks, probably plundered from the tombs on the Via Appia. Under the arch is a gothic inscription relating to the repulse of some unknown invaders. It was here that the senate and people of Rome received in state the last triumphant procession which has entered the city by the Via Appia, that of Marc-Antonio Colonna, after the victory of Lepanto in 1571. As in the processions of the old Roman generals, the children of the conquered prince were forced to adorn the triumph of the victor, who rode into Rome attended by all the Roman nobles, "in abito di grande formalità,"[197] preceded by the standard of the fleet. From the gate, the _Clivus Martis_ (crossed by the railway to Civita Vecchia) descends into the valley of the Almo, where antiquaries formerly placed the Porta Capena. On the hillside stood a Temple of Mars, vowed in the Gallic war, and dedicated by T. Quinctius the "duumvir sacris faciundis," in B.C. 387. No remains exist of this temple. It was "approached from the Via Capena by a portico, which must have rivalled in length the celebrated portico at Bologna extending to the church of the Madonna di S. Luca."[198] Near this, a temple was erected to Tempestas in B.C. 260, by L. Cornelius Scipio, to commemorate the narrow escape of his fleet from shipwreck off the coast of Sardinia.[199] Near this, also, the poet Terence owned a small estate of twenty acres, presented to him by his friend Scipio Emilianus.[200] After crossing the brook, we pass between two conspicuous tombs. That on the left is the _Tomb of Geta_, son of Septimius Severus, the murdered brother of Caracalla; that on the right is the _Tomb of Priscilla_, wife of Abascantius, a favourite freedman of Domitian. "Est locus, ante urbem, qua primum nascitur ingens Appia, quaque Italo gemitus Almone Cybele Ponit, et Idæos jam non reminiscitur amnes. Hic te Sidonio velatam molliter ostro Eximius conjux (nec enim fumantia busta Clamoremque rogi potuit perferre), beato Composuit, Priscilla, toro." _Statius_, lib. v. _Sylv._ i. 222. Just beyond this, the _Via Ardeatina_ branches off on the right, passing, after about two miles, the picturesque _Vigna Marancia_, a pleasant spot, with fine old pines and cypresses. Where the roads divide, is the _Church of Domine Quo Vadis_, containing a copy of the celebrated footprint said to have been left here by Our Saviour: the original being removed to S. Sebastiano.