We built an interactive installation to demonstrate the fragility of peace treaties between the two world wars. We set up the installation in a replica of the Hall of Mirrors of the Palace of Versailles complete with the gold relief decorated walls and antique hardwood floor. We created the image of the cracked hardwood floor with ultra-high-resolution projected AR and tracked the steps of a large number of visitors with special 3D cameras which we programed to only map a specific range of space in the room so that they could essentially see through the baroque chandeliers. By doing so, we were able to break the beautiful 100m² floor to pieces and put it back together minute by minute as visitors walked through the room of fragile peace.