A formidable Norman Keep was erected, with walls 15 feet thick, so strongly built that they stand to-day practically as they stood 900 years ago, save that stone-faced windows were put in a couple of centuries ago to take the place of the narrow slits or loopholes which served for light and ventilation in a fortress of this sort.
Ground Plan of the Tower.
To understand the Tower of London properly (and we really want some idea of it before any visit, otherwise it is merely a confusion of towers and open spaces without any meaning) we must realize that it consists of three separate lines of defences, all erected at different times. The innermost, the Keep or White Tower, we have touched upon. Beyond that, and separated from it by an open space known as the Inner Ward, is the first wall, with its twelve towers, among them the Beauchamp Tower, the Bell Tower, the Bloody Tower, and the Wakefield Tower. Then, beyond that again, and separated by another open space known as the Outer Ward, is yet another wall; and still beyond is the Moat, outside everything. So that any attacking army, having successfully negotiated the Moat, would find itself with the outer wall to scale and break, and within that another inner wall, 46 feet high. The garrison, driven back from these two, could even then retire to the innermost keep, with its walls 15 feet thick, and there hold out for a great length of time against the fiercest attacks. So that, you will readily see, the Tower was a fortress of tremendous strength in days before the use of heavy artillery.
The outer defences were added to William’s White Tower from time to time by various monarchs. The first or inner wall, 8 feet thick, begun in the Conqueror’s days, was added to and strengthened by Stephen, Henry II., and John. The outer wall and the Moat were completed by Henry II.; and the Tower thus took its present shape.
Most of our Sovereigns, from the Conqueror’s time right down to the Restoration, used the Tower of London. Kings and Queens who were powerful used it as a prison for their enemies; those who were weak and feared the people used it as a fortress for themselves. This latter use of the Tower was particularly instanced in the reign of Stephen—an illuminating chapter in the story of London.
Stephen, following the death of Henry I., was elected King by the Great Council, and duly crowned in London; but the barons soon saw that he was unfitted for the task of ruling, and they took sides with the Empress Matilda, hoping thereby to get nearer the independence they desired. Stephen for a time held his own with the aid of a number of trusty barons, but in 1139 he offended the Church by his rough treatment of the Bishops of Lincoln and Salisbury, and his supporters fell away. Consequently he was compelled in the following year to seek safety in the Tower, close to his loyal followers, the citizens of London.
Now the constable of the Tower in those days was one Geoffrey de Mandeville, about as unscrupulous and cruel a rascal as could be imagined. Stephen, to ensure his support, made him Earl of Essex, and for a time all went well. But when, following Stephen’s defeat and capture in 1141, the Empress Matilda moved to London to be crowned, Geoffrey de Mandeville had not the slightest compunction in taking sides with her, for which he was rewarded by the gift of castles, revenues, and the office of Sheriff of Essex. But Matilda offended the citizens of London to such an extent that they drove her from the city and attacked Mandeville in the Tower. Whereupon Mandeville, without any hesitation, transferred his allegiance to Maud of Boulogne, Stephen’s wife, who was rallying his scattered forces—which allegiance was purchased by making Mandeville the Sheriff of Hertfordshire, Middlesex, and London, as well. Nothing, however, could serve to make this treacherous man act straightly, and when later Stephen found him planning yet another revolt in favour of Matilda, he attacked him suddenly, took him prisoner, and removed him from all public affairs.
This chapter in English history is far from showing the English nobles in a good light, but it is exceedingly interesting as revealing the extent to which London was beginning to count in the kingdom.
To-day we enter from the city side by what is known as the Middle Tower—a renovated and modernized gateway, with a big, stone-carved Royal Arms above its arch. The name “Middle” strikes us as curious, seeing that it is the first protection on the landward side, until we remember or learn that originally there was another Tower, the Lion Tower, nearer the city (approximately where the refreshment room now stands) and separated from the Middle Tower by a drawbridge. But the Lion Tower disappeared many many years ago, and only two of the three outer defences remain, the Middle Tower and the Byward Tower, the latter reached by a permanent bridge over the Moat.