The concept of light is very important to Gothic Cathedrals as stained glass windows became important teaching tools for the clergy to communicate with the largely illiterate masses. Which stained glass program best reflects this era and offered the most complete teaching tools?  Which, in your opinion, offered the most dramatic or theatrical visual experience?  Provide images to help illustrate your choice.

Please use one of Gothic Cathedrals mentioned below:

Basilica St. Denis, Paris, France
Notre Dame, Paris, France
La Sainte Chapelle, Paris, France
Laon Cathedral, Laon, France
Chartres Cathedral, Chartres, France