The properties of light greatly inspired Folon’s artistic research, especially in his paintings, silkscreen prints and aquatints. In 1991, he added another string to his bow when he began to create stained glass windows for a private chapel. For this project, he called on the know-how of the master glassmakers of Ateliers Loire in Chartres. This collaboration resulted in the installation of highly poetic and meticulously crafted stained glass windows, featuring Folon’s modern take on Christian themes, in a number of ancient religious buildings: the Church of Saint-Amand in Burcy in 1997, the private Chapelle de Pise (Quissac, France) in the same year, the Church of Saint-Etienne in Waha in 2003-2005, and the Chapelle des Pénitents Blancs in Saint-Paul de Vence, where the windows were completed following Folon’s death in 2005. Folon also worked with the Loire family to create the series of stained glass windows for the Monte-Carlo Bay Hotel in Monaco in 2005, and some artist’s editions, including La lune, which is on display in the museum in La Hulpe.