It will hardly be necessary to enlarge on the beauty of this spire of Norwich, as the dominant feature, seen from the south-east, rising above the curved sweep of the apse, and strongly buttressed by the south transept, it stands up, clearly defined against the western sky, and points upward, significant and symbolical at once of the ends and aspirations of the church below. #The Eastern Arm of Cathedral or Presbytery# takes its history from the tower. Here, as in the nave, there are the original triforium windows blocked up, and a range of Perpendicular work superimposed on the old. Above and beyond this, supported between each bay by flying buttresses, comes the transitional Decorated to Perpendicular clerestory, considerably higher than the original Norman clerestory remaining to the nave. At the base of each flying buttress are figures of saints. The roof and Norman clerestory were damaged by the falling tower in 1361, but were rebuilt by Bishop Percy, 1355-69. This work is transitional Decorated to Perpendicular. The presbytery was then re-roofed with a framed timber construction, which was consumed by the falling of the burning spire, struck by lightning in 1463. The present stone vault was added in its place by Bishop Goldwell, 1472-99. This necessitated the addition as well of flying buttresses to take the thrust of the vault. The battlementing to the presbytery also was added at the same time as the flying buttresses. It will also be noted that here, as in the nave, an addition was made in the way of a range of later "Perpendicular" windows superimposed over the original Norman triforium, which was blocked up. #The Chapel of St. Mary-the-Less#, marked B on plan, projects southward from the presbytery, and dates from the fourteenth century. Between this and the circular Norman chapel of St. Luke, was Bishop Wakeryng's chapel. It has long since disappeared, but the doorway of Perpendicular design remained until about 1841, when it was removed and the compartment Normanised--a piece of wanton vandalism and the destruction of an historical link. The circular Norman chapels, of which two remain, are very interesting. In the original plan of the founder there were three; but the easternmost was superseded by Early English structure, which in its turn was demolished.