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.
French Gothic architecture
The Flamboyant Gothic style appeared in the second half of the 14th century. Its characteristic features were more exuberant decoration, as the nobles and wealthy citizens of mostly northern French cities competed to build more and more elaborate churches and cathedrals. It took its name from the sinuous, flame-like designs which ornamented windows. Other new features included the "arc en accolade", a window decorated with an arch, stone pinnacles and floral sculpture. It also featured an increase in the number of "nervures", or ribs, that supported and decorated each vault of the ceiling, both for greater support and decorative effect. Notable examples of Flamboyant Gothic include the western facade of Rouen Cathedral and Sainte-Chapelle de Vincennes in Paris, both built in the 1370s; and the Choir of Mont Saint Michel Abbey (about 1448).