modular origami fortress of excitement and neurosis

this is so nerdy that you may not be able to look directly at it.

basically, the indifferent weather during family vacation on block island resulted in me making several hundred tsu units, as various family members looked on in horror. then i wove them together to make this thing. it provides an excellent home for teenage mutant ninja turtles.

here’s another view:

infinitely extended, the pattern would be a sort of honeycomb of spherical cavities, each adjoining 12 others; the unit, designed by charles esseltine, is being used here exclusively to create pyramids with square bases, except where OH NO HELP JOCKS HAVE ENTERED THE ROOM AND ARE PUMMELING ME