name but two, the Christopher Whall window of 1906 in the west wall of the south west transept and the windows of 1957 by Erwin Bossanyi in the south east transept are both regarded as eminent representatives of their respective era. Although they differ enormously from their mediaeval ancestors, these windows are now an integral part of the glazing of Canterbury Cathedral, contributing to its diversity and its sheer splendour. The stained glass of the Cathedral is thus justifiably recognised as one of its great treasures.Wall PaintingsPrior to the Reformation and the Commonwealth in the Seventeenth Century, Canterbury Cathedral was rich in wallpaintings. All that remains to catch the eye of the modern visitor is a number of fine examples of the wallpainters' art, and a great number of fragments which give a tantalising idea of what must once have been. The condition of every painting and every fragment is checked regularly by the Cathedral's expert Wallpaintings Advisory Committee.…St. Anselm's ChapelThe wallpainting of St. Paul and the Viper dates from circa 1160. It is situated high in the north corner of the Eastern Apse of the chapel, with the decoration continuing on to the string courses above and below the painting and round the north window which is blocked. The painting was discovered behind a buttressing wall in 1888. The centuries spent behind the wall have ensured the survival of this vivid painting.…St. Gabriel's Chapel This chapel contains two extensive Romanesque schemes of painting, plus remains of later, possibly sixteenth century decoration. The earliest scheme in the Apse comprises apocalyptic subjects and scenes of the infancy of John the Baptist and the infancy of Christ. The Romanesque painting in the Nave of this chapel survives mainly in the two west bays. These date from about 1180. …Our Lady Undercroft In the chapel of Our Lady Undercroft, one forms the impression of a vivid scheme of decora...