Amiens Cathedral, Choir south side and south transept, east side.

To the right the Chapelle des Macchabées: note the little rectangular window with its play on double-curved tracery. Beside the chapel is a little house built by Viollet-le-Duc. This was the area of the masons' yard in the Middle Ages: masons still work here in the area closed off by the metallic fence directly in front of us.
You can see the three straight bays of the choir with their windows enclosing three oculi of equal size framed by pointed arches with a rather rounded shape. The lowest part of the wall, up to the window sill, was laid out by Robert de Luzarches (1220s); Thomas of Cormont brought the work up to the aisle roof (1230s) and Renaud de Cormont was responsible for the much more elaborately-articulated forms of the upper choir (1250s-60s). In the east angle of the south transept, directly in front of us, is the chapel of the Conversion of Saint Paul, founded by Dean Jean d'Abbeville in 1233. This was the first chapel to be founded.