Defined by Abbot Suger(1085-1151) in his remodeling of Benedictine abbey Saint-Denis outside ParisSpecifically: Choir 1140Fundamentals:Pointed arch (not rounded)Rib vaultStained glassFlying buttresses (support high, thin windowed structure)Others:Gargoyles (waterspouts shaped like grotesque creatures)Crockets (stylized leaves)Finials (crowning ornamental details)