Below are three fun 'mind-banders' for some holiday fun.
I need this sort of stuff to ponder when I'm off work and my hands are not actually thinking about placing odd shaped stones in walls
Where did he go ?
Impossible Cylinder (original drawing by Istvan Orosz):An "impossible" cylinder art work by Istvan Orosz (A poster design) is realized here. This cylinder is, in fact, a double-twist Moebius ring.
Presumably a dry laid, slightly less distorted version of this could actually be built with stone blocks?
Never ending pieces of chocolate !!