The Roman fortification forms an oblong square, with the corners a little rounded, {200a} and unfurnished with towers. Many fragments of the walls accompanied by the fosse are evident; deprived of the facing-stones, they appear in great masses of grout-work; _i.e._ of stones, broken tiles, and bricks promiscuously bedded in cement. The remains are no where more than fourteen feet high, which is much less than their original elevation, and ten or twelve in thickness. Their circumference does not exceed 1800 yards; but the adjacent fields are continually yielding up foundations, &c. which denote the suburbs to have been very extensive; tradition, indeed, reports them to have been nine miles round. The castle stood between the walls and the river, of which some small vestiges appear at the Hanbury Arms. {200b} At a little distance from this place, on the opposite side of the road, we noticed a high artificial mound about 300 yards in circumference, which is the site of the citadel described by Giraldus as gigantic. The small remains of its walls appear to consist of solid masonry; but this part of the fortification is, no doubt, posterior to the rest, and was most likely erected by the Normans. The house of Miss Morgan, formerly a Cistercian abbey, has been entirely new-faced with squared stones collected from the ruins of Caerleon, as have also many others in the town. This lady has collected several Roman coins, and has other curiosities in her possession that we would gladly have examined, and were offered an introduction for that purpose; but our way-worn apparel (a false shame, if the reader insist upon it) was an obstacle in our way of accepting it. Other Roman vestiges appear in the market-house of Caerleon, which is supported by four massive Tuscan pillars. Immediately without the town, and adjoining Miss Morgan’s premises, is the Roman amphitheatre, commonly called Arthur’s round table. It is an oval concavity, seventy-four yards by sixty-four, and six deep; in which are ranges of stone seats, though now covered with earth and verdure. The foundation of its encircling walls was met with on digging in the year 1706, when a statue of Diana and two ornamental pedestals were also discovered. In the neighbourhood of Caerleon are several encampments that were probably used for airing the troops in summer. The most remarkable are, that of the Lodge, occupying a hill in the park of Lantarnam, about a mile north-west of Caerleon; the one of Penros, a short distance to the left of the road to Usk; that at Mayndee, near Christ-church; and a fourth in the wood of St. Julian’s, towards Newport. Near the latter spot a chapel of high antiquity, dedicated to St. Julius; is now used as a barn. But St. Julian’s is more remarkable for a Gothic mansion, once the residence of the ingenious, valiant, and vain lord Herbert of Cherbury.