How to get a 600-cell
An illustration of the construction of the 600-cell, that is one of the six regular polytopes in dimension 4, made of 600 tetrahedra; the two tied tori are made of 150 tetrahedra each and the space between them is filled up by 300 tetrahedra.
© matematita
immagine di Gian Marco Todesco
The image belongs to the sections...:
600-cell (4D geometry)
Further information:
http://www.toonz.com/personal/todesco