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 new style quickly became known to the builders of new cathedrals, notably Sens Cathedral, the first Gothic Cathedral (begun 1135); Senlis Cathedral (1160), and the most prominent of all, Notre Dame Cathedral in Paris (begun 1160). Their builders abandoned the traditional plans and introduced the new Gothic elements. The builders of Notre Dame went further by introducing the flying buttress, heavy columns of support outside the walls connected by arches to the walls, which received and counterbalanced the thrust from the rib vaults of the roof. This allowed the builders to construct higher walls and larger windows.