Grand tall designs - they swept upwards with height and grandeur.
Pointed arches - was used to support more weight than regular pillars.
Flying buttress - used to reinforce the walls that tended to lean outward under the weight of the vaulted ceilings.
Stained glass windows - often had complex and beautiful patterns. The Rose Window is commonly used for its beautiful design.
Statuary such as gargoyles - often thought to ward off evil spirits and was also used as a water spout for many gutters lining the vaulted ceilings.