The three rose windows each represent a different period of the cathedral's construction. • The rose window on the West façade is the oldest, from 1221–1230, from the High Gothic period, and represents Jesus Christ surrounded by the symbolic figures of the Apocalypse. • The rose window of the north transept has the characteristic radiating tracery of the Rayonnant Gothic. • The rose window of the South transept is the latest, from 1489–90, with the curves and reverse curves of the late Gothic Flamboyant style. It depicts fourteen angels, heads towards the centre of the window, in a style characteristic of the Picard style of window in the 15th century. The exterior placements are shown below. It is very hard to photograph the North side of this Cathedral! [Photo Credits: #1 Wikimedia Zairon ; #2 Wikimedia Blue-Rich ; #3 Wikimedia Txllxt Txllxt ; #4 Wikimedia Jean-Pol Grandmont ; #5 Google Maps Maxime Beudment ; #6 Wikimedia Zairon.