The Omni-polyhedron may seem new to many Americans, but Spanish students build these models. Originally called the “Omnipoliedro”, the shape is many polyhedrons, one hiding inside of another; an Icosahedron that fits around a Dodecahedron, which fits around a Hexahedron, or Cube, which goes over a Tetrahedron (a four-sided pyramid), and finally fits around an Octahedron. Often the edges of each polyhedron are colored, each polyhedron differently so that it is easier to define between them all. In the end, it should look something like this: