6. The Cathedral of St. Castor, dating from about the eleventh century, has been reconstructed and restored so much that the western façade is the chief survival of the original church. Its richly carved frieze, showing scenes from the Book of Genesis, is of great interest. 7. The Pont-du-Gard (about fourteen miles north from Nîmes, near the town of Ramoulins) is one of the most imposing Roman works in the world. It is part of the aqueduct, twenty-five miles long, which brought water to Nîmes, and is still practically perfect to-day. It was built in 19 B.C., in the time of Agrippa; some repairs were made in 1702, and again in 1855. From the steep sides of the river one can easily reach the top of the aqueduct, and walk the whole length of the waterway or on the slabs of stone which cover it in for a considerable distance. Looking down over the orange-coloured stone of the superimposed arches, one sees the myrtle-green waters of the River Gardon rushing between grey rocks 156 feet below. Remains of the reservoir to which the water was led still survive in Nîmes. THE ROAD TO ARLES From Nîmes the road is practically level all the way to Arles, whether one goes by St. Gilles or direct through Bellegarde. ST. GILLES The St. Gilles route is only seven kilometres longer, and the slightly increased distance will not be regretted when the remarkable church has been seen. It was planned on a vast scale, and, if carried out, would have been one of the finest Byzantine churches in France; but for some reasons, perhaps connected with the decline of St. Gilles as a port owing to the constant silting up of the Rhone delta, or possibly owing to war or pestilence or a weakening of religious enthusiasm, the great structure was never finished, and a smaller church in the Gothic style is all that came to completion. It embodies, however, the splendid western façade of the earlier scheme, and the details of its columns, its mutilated statues and carved enrichments, are finer even than those of St. Trophime at Arles. The abbot of the monastery, which had been founded by St. Egidius in the sixth century, administered justice seated between the grotesque lions of the portal, and the charters often began with, ‘_Sedente inter leones_.’ The crypt, the tomb of St. Gilles and his altar, the twelfth-century sacristy, and the _Vis de S. Gilles_, a remarkably fine newel staircase, should all be seen. There is also a restored Romanesque house in the town of St. Gilles.[J]