The spire rises out of the supporting walls of the tower within the parapet. It is a regular octagon in shape. Four octagonal pinnacles are placed at its base next to each of the turrets of the tower; and between these, on the other four faces of the spire, are tall stone dormers, with carved crockets and finials on the copings of the high-pitched gables. Above this group the spire is divided into three sections by two bands of diaper-work cut out of the stone surfaces as cusped quatrefoils; and from the base of the spire to its capstone there is a projecting rib on each angle between the several faces of the octagon.
The Bell Tower, which stands alone to the north of the cathedral, is now the only one of its kind in England; and it is curious that in two cases where these towers were found, as at Salisbury and at Norwich, spires had been added to the central towers. The cathedral bells have been hung in this tower since the fifteenth century. The structure itself, with its massive walls, is square in plan at the base, but at the top story it becomes an octagon, and the buttresses on each angle terminate as pinnacles between the angles of the square and four sides of the octagon.
