![](https://coursebible.com/images/common/gothic3.jpg)
The flying buttress transfers the thrust of the stone roof from the thin nave wall downwards and outwards, enabling the architect to open up the walls into huge stained- glass panels.
Flying Buttresses, Notre Dame, Paris
![](https://coursebible.com/images/common/gothicbut1.jpg)
![](https://coursebible.com/images/common/gothic1.gif)
Ground Plan of a Gothic Cathedral: Chartres