The Castle stands boldly elevated on a considerable eminence on the narrow isthmus formed by the windings of the Severn, which in every other part, by surrounding Shrewsbury, formed a portion of its defence. It has undergone so many changes, and has suffered so much from the dilapidations of time, that it is not easy to form any correct notion of its original state. Its appearance does not convey an adequate idea of the size, stateliness, or the strength of a great baronial fortress, placed in so important a position as Shrewsbury was once esteemed. The present buildings are of red free stone, and consist of the keep, the walls of the inner court, and the great arch of the interior gate. How far the original fortifications extended cannot now be absolutely determined. It is probable that the usual appendages of feudal castles, the outer court or ballium, with its strong gate, portcullis, and towers, once made part of the fortress, and extended, perhaps, beyond the Council House. The keep is a square building of great strength, connected with two round towers, embattled and pierced, and originally consisted of one great apartment on each of the upper floors. The interior as well as the exterior has been greatly altered. In the vestibule is a statue of the founder, Roger de Montgomery. A handsome stone staircase, of modern construction, leads from the vestibule to the principal apartments. The drawing room, a spacious and handsome apartment, was used as a guard chamber in the time of Charles I. A narrow stone staircase within the wall, lighted by chinks, leads to an apartment in the western tower, in which was a recess, with a strong groined ceiling, and small sharp pointed windows. This building does not appear older than the time of Henry III.; the beams are of an immense size, and the walls are ten feet in thickness. The battlements of the walls are pierced with narrow cruciform openings, called loops or oilets, which were intended for the convenience of the cross-bowmen. The noble arch of the gateway is the only existing part of the original Norman fortress of Roger de Montgomery. It is eighteen feet high, semi-circular, and with plain round facings; and its walls appear to have sustained a tower, from which hung the portcullis. On the east side of the court is a postern, built probably in the time of Charles I., when the fortress was restored; and near it are the massive foundations of an ancient tower. The Castle still retains one mark of its ancient dignity, for in the area of the inner court the knights of the shire are nominated, and from time immemorial have been girt with their swords by the sheriff.