A flying buttress is an architectural feature commonly associated with Gothic cathedrals. It consists of an arched structure that extends from the upper part of a wall to a pier, allowing for greater height and stability. This innovative design helps distribute the weight of the roof and walls, enabling the construction of large stained glass windows and intricate designs. Flying buttresses not only serve a functional purpose but also add to the aesthetic appeal of buildings. They are often seen in famous structures like Notre-Dame de Paris and Chartres Cathedral, showcasing the beauty and engineering prowess of the Gothic style.