The Champagne-Ardenne region possesses an extremely rich heritage of ancient glass production. Though the Cathedral has lost a portion of its original stained glass, it still holds some of the most remarkable Gothic examples of the art. To preserve this heritage, the State supports both the restoration of existing stained glass and the creation of new works.

Thus, certain medieval windows have regained their original splendor while, at the same time, renowned artists such as Marc Chagall and Brigitte Simon have added their artistry to Notre Dame. These contemporary creations were made possible thanks to fundraising operations.