Gothic architecture
Sens Cathedral (begun between 1135 and 1140) was the first Cathedral to be built in the new style (St. Denis was an abbey, not a Cathedral). Other versions of the new style soon appeared in Noyon Cathedral (begun 1150); Laon Cathedral (begun 1165); and the most famous of all, Notre-Dame de Paris, where construction had begun in 1160.
Gothic architecture
Another landmark of the Rayonnant Gothic are the two rose windows on the north and south of the transept of Notre Dame Cathedral. Whereas earlier rose windows, like those of Amiens Cathedral, were framed by stone and occupied only a portion of the wall, these two windows, with a delicate lace-like framework, occupied the entire space between the pillars.