In this room of the palazzo, a new wall covering the historical windows is mounted with twenty-four glass spheres arranged in a circle. With the original glass panes masked, the light from outside—as well as the view beyond—is now visible only through the spheres, which act as a lens. Through the process of optical refraction, the scene rendered in each of the twenty-four spheres appears upside down, creating a compound image of the environment that lies just beyond the palazzo’s exterior.