This is the only diagrammed origami model that simulates a true mathematical fractal. It makes a pyramid shape with many branches. No one has yet successfully folded a version without cutting the paper; the version in the picture (folded by the author) was made by carefully cutting the crease pattern into several pieces, folding these using the recursive folding instructions, and then gluing them back together. The challenge of folding recursive diagrams as well as the dexterity involved to not destroy the paper easily put this model in the supercomplex category.
Commentary on folding, supporting, and displaying this famous model designed by the late Issei Yoshino. Model constructed by the members of <a href="http://origamit.scripts.mit.edu/" target="blank">OrigaMIT</a>, MIT's origami club.