Shortly after the dawn of the twelfth century one Walter de Clare founded Tintern for Cistercian monks, and in the thirteenth century a lord of Chepstow, Roger de Bigod, built the abbey. Cruciform in shape, it was 228 feet in length, 70 feet high, and 37 feet in breadth, with transepts 150 feet long. When King Henry VIII. took possession of the monasteries, he allowed this to fall into rapid decay, and at length presented it to the Earl of Worcester. The ruins now belong to the Duke of Beaufort, and they are watched and guarded from further decay with admirable vigilance, each particular stone being carefully noted, and every moulded arch and mullioned window--indeed, the very ivy and grass--receiving close attention. The magnificent eastern window, 64 feet in breadth, is but one feature of a ruin that attracts multitudes of visitors to the valley of the Wye.
Between Tintern and the little metropolis of the lower Wye, Chepstow, duty to one's sense of sight requires him to scale the summit of Wyndcliff. Once on top, nine counties, according to Bevan, can be seen--to wit, Gloucester, Somerset, Wilts, Devon, Glamorgan, Monmouth, Brecknock, Hereford, and Worcester. Not only for the curiosity of a prospect which in its sweep takes in so many shires, but also for the beauty of the view, this ascent of the Wyndcliff should not be missed. For an exquisite blending of rock and river, forests, mountains, and plain, towns and villages, ruins and farmhouses, roads like white-silk threads blown upon the face of the land, black railways, drifting ships, it is not too much to say that the finest views in all the land can do no more than claim to be its peer.
After we have passed on the left Llancaut and on the right Pierce Woods, the sturdy old town of Chepstow comes into view. The castle, from the river, seems to have grown out of the living rocks, which here rise sheer from the water to a great height, and form a natural defence that must have rendered the fortress impregnable to all attack from the water. Supposed to have been built in the eleventh and rebuilt in the thirteenth century, it experienced its most stirring times in the days of the Civil War. It was held by the Royalists; and there first appeared before it Colonel Morgan, who, with singular valour and determination, carried it by assault. Later on Sir Nicholas Kemys successfully surprised the place, which action brought before the battlements Cromwell himself, who, however, could not spare the time personally to direct the operations. His substitute, Colonel Ewer, with great skill conducted the siege, and ultimately forced the king's men to throw open the gates.