Tesseract

This particular orthographic projection of a 4 dimensional cube, or 4-cube, or 8-cell, also called a tesseract (see Wikipedia) results in the outer edges forming an irregular rhombic dodecahedron. (It is not quite regular, as then the struts would all meet in a single point in the center. I thought this version was more interesting.) The 4-cube is also classified as a regular 4th dimensional polytope, the 4D analog to a cube, and has 16 vertices and 32 edges, and 8 cubic faces.