Architecture: the inner ward

The inner ward of the Tower of London was created during Richard the Lionheart's reign, and Henry III created the east and north walls, and the dimensions remain to this day. Most of the job of this last man survives, and only two of the nine towers he constructed have been completely rebuilt.
The ward had 13 towers. Anti-clockwise, their names are: Bell, Beauchamp, Devereux, Flint, Bowyer, Brick, Martin, Constable, Broad Arrow, Salt, Lanthorn, Wakefield, and the Bloody Tower. The Beauchamp Tower was the first large-scale use of brick as a building material in Britain.
Each tower had a function: Bell Tower purpose was to raise the alarm in case of attack, in the Bowyer Tower, catapults, longbows and other siege and hand weapons were made, etc.
During a period of years, a range of buildings for the storage of munitions was built along the inside of the north inner ward.