A 3D projection of the 120-cell, a 4D polytope that has 120 dodecahedral cells. This is a "hidden-cell removed" projection, to avoid confusing clutter in the projection; we are seeing roughly half of the cells.

It is "vertex-first" because the center of the projection is a vertex, where four dodecahedra meet symmetrically.

Created with vZome (https://vzome.com)