Prehistoric architecture is well represented in Brittany, where the vast scale of the Carnac lines--the Avenues of Kermario--dwarfs the British survivals on Salisbury Plain and Dartmoor. There are numerous dolmens and tumuli, containing chambers roughly constructed out of unhewn stones of the New Grange (Ireland) type, but there is nothing comparable to Stonehenge. When one comes to the Roman period the remains are so splendid that many are satisfied with what they have seen in Provence, and do not feel impelled to see Rome before they die. Nimes stands first among the towns of Provence for the splendour of the Roman structures it has preserved. Not only has it an amphitheatre which is more perfect than any other in existence, but its temple, dedicated to Caius and Lucius Caesar, adopted sons of the Emperor Augustus, between the first and the fourteenth year of the Christian era, is also the best preserved in the world. Having been used successively as a church, a municipal hall, and a stable, it is now a museum of Roman objects, and seems capable of standing for an unlimited time. Besides these most famous structures there are two gateways, one of them bearing an inscription stating that it was built in the year 16 B.C. To the north of the town are Roman baths of wonderful completeness, and in their restored condition of very considerable beauty. Over them on the hill-top rises the Tour Magne, a Roman watch-tower which formed part of the defences of the city. Stretching across the deep and rocky bed of the river Gard, about 14 miles to the north, is the vast aqueduct which carried the water-supply of Nimes across the obstruction caused by the river. The three superimposed tiers of arches filling the wide space make one of the most imposing of all the Roman works that have come down to the present time. [Illustration: THE ROMAN TRIUMPHAL ARCH AT ORANGE.] Arles is a serious rival to Nimes. It has preserved its amphitheatre, built about the first century A.D. and large enough to hold an audience of 25,000 persons. The remains of its theatre, with two marble columns of its proscenium, which were utilised as a gallows in the Middle Ages, standing out among the fallen and dislodged stones, has preserved just enough of its form to be exceedingly impressive. In the disused church of St. Anne have been gathered a most remarkable collection of Roman sarcophagi, altars, and many other objects of richly sculptured stone, while in the Avenue des Alyscamps one may see the cemetery of Roman Arles just outside the city walls, dating from the reign of the Emperor Constantine. On the two sides of the avenue there are many stone sarcophagi, the larger ones, of which there are two or three dozen, having retained their lids. There are remains of the forum and a tower of Constantine's palace, built early in the fourth century.