The Last Supper

The Last Supper Window was created by Rosa Caselli-Moretti and her sister Cecilia Caselli-Moretti at their studio in Perugia, Italy. The medium of stained glass adds an entirely new dimension to the scene. As light filters through the Last Supper Window, it transforms Leonardo’s static wall painting into a vibrant and ever-changing artwork. 

The level of detail in the Last Supper Window is remarkable, and it is much clearer than Leonardo’s original fresco, which began deteriorating shortly after it was first completed c. 1495-1498. Rosa Caselli-Moretti closely studied Leonardo’s preparatory sketches for the project to recreate the original painting’s lost details. 

After each piece of colored glass was cut to shape, Caselli-Moretti added details and shading with special paints. Each piece was fired in a kiln to bind the paint to the glass; however, the panels often cracked or broke in the process. According to records, the piece with Judas (the disciple who betrayed Christ) broke five times during this firing process before the window was completed in 1931.