have been completely rebuilt. Between the Wakefield and Lanthorn Towers, the innermost ward's wall also serves as a curtain wall for the inner ward. The main entrance to the inner ward would have been through a gatehouse, most likely in the west wall on the site of what is now Beauchamp Tower. The inner ward's western curtain wall was rebuilt by Edward I. The 13th-century Beauchamp Tower marks the first large-scale use of brick as a building material in Britain, since the 5th-century departure of the Romans. The Beauchamp Tower is one of 13 towers that stud the curtain wall. Clockwise from the south-west corner they are: Bell, Beauchamp, Devereux, Flint, Bowyer, Brick, Martin, Constable, Broad Arrow, Salt, Lanthorn, Wakefield, and the Bloody Tower. While these towers provided positions from which flanking fire could be deployed against a potential enemy, they also contained accommodation. As its name suggests, Bell Tower housed a belfry, its purpose to raise the alarm in the event of an attack. The royal bow-maker, responsible for making longbows, crossbows, catapults, and other siege and hand weapons, had a workshop in the Bowyer Tower. A turret at the top of Lanthorn Tower was used as a beacon by traffic approaching the Tower at night. As a result of Henry's expansion, St Peter ad Vincula, a Norman chapel which had previously stood outside the Tower, was incorporated into the castle. Henry decorated the chapel by adding glazed windows, and stalls for himself and his queen. It was rebuilt by Edward I at a cost of over £300 and again by Henry VIII in 1519; the current building dates from this period, although the chapel was refurbished in the 19th century. Immediately west of Wakefield Tower, the Bloody Tower was built at the same time as the inner ward's curtain wall, and as a water-gate provided access to the castle from the River Thames. It was a simple structure, protected by a portcullis and gate. The Bloody Tower acquired its name in the 16th century, as it was believed to be the site of the murder of the Princes in the Tower. Between 1339 and 1341, a gatehouse was built into the curtain wall between Bell and Salt Towers. During the Tudor period, a range of buildings for the storage of munitions was built along the inside of the north inner ward. The castle buildings were remodelled during the