There is no better spot than the Pierre de Couhard from which to picture Augustodunum as it was on that day when Constantine rode through the Porte de Rome, now known as the Porte des Marbres, which then stood where the cemetery now abutts on to the end of the Rue de la Jambe de Bois. Thence the main street of the city, the Voie d'Agrippa, bordered by the important and imposing buildings, such as the Temple of Apollo, the Schools, the Forum, and the Capitol, ran in a straight line to the Porte d'Arroux, nearly in the direction of the Temple of Janus, still faintly visible to-day, far away on the plain beyond the river. This Voie d'Agrippa roughly bisected the Roman town, all the streets of which were laid out, like those of a modern American City, either parallel or at right angles to that axial line. Augustodunum, though it lacked the lovely gables, lofty spires, and pleasant disorder of Gothic Autun, must yet have shown to the traveller looking back from the road to Rome, a splendid pile of temples and palaces and gardens, as his glance wandered from the gleaming marble gates, and the flashing dome of the Capitol, to the majestic arches and sculptured columns and colonnades of the great arena and lovely theatre, whose ruins are yet seen through the avenue of lime trees, above the ivy-crowned stones of the ancient enceinte.[23] Lovely is this spectacle, even to-day. On the left, to the south-west, the mediæval city, the Castrum, lifts its pile of gabled, palace roofs above the sombre firs, and line of bronzed fortresses, walls, and leaf-clad towers that mark the Roman enceinte. Higher yet, over all, the spires and pinnacles of the cathedral of St. Lazare glitter against the background of hills. On the way back, our attention was divided between the glories of that view, and the "chasse aux poules" or chicken hunt--the one form of sport indulged in by the old ladies of a Burgundian village. A very few hours in Autun were enough to reveal the fact that this largest Gallo-Roman city of Burgundy contains Roman remains as interesting as any in France, known to me, excepting those of Nimes, Orange, and Arles; while, around two of them--the Temple of Janus[24] and the Pierre de Couhard--there still lingers an element of mystery that renders them doubly attractive to the curious mind. The "Temple de Janus" lies, as the reader will remember, at the foot of Autun, in the meadow beside the Arroux. Its original purpose is doubtful. M. Viollet le Duc held it to be a Fort Détaché, built outside the ramparts, for the purpose of barring the passage of the river, and commanding the plain.[25] M. de Fontenay, on the other hand, asserts,--and I venture to think proves,--that the building was not designed for military purposes, and was, in fact, a temple; though there is no evidence to tell us to which deity it was dedicated.[26]