From Wenzel Jamnitzer’s Perspectiva Corporum Regularium published in 1568. The final chapter of this book is concerned with what could be described as polyhedral monuments: mazzocchio, cones, spheres… Many of these monuments could never be erected as structures. Some balance on a single vertex, others are connected only through vertices. Some just float in space. It are geometrical fantasies simply presented for what they are.