I made this, using Stella 4d, by repeatedly stellating the small cubicuboctahedron, which is one of the uniform polyhedra. I think it looks like a red cube, sitting securely in the middle of a castle. Here’s what it looks like before these stellations:

If you’d like to try Stella for yourself, the site to visit for a free trial download is http://www.software3d.com/Stella.php.