Shigeo Fukuda has once again masterfully recreated an Escher piece, this time the ” Belvedere” illusion — where the front and back edges seem to cross each other simultaneously. Full-sized image here. Video clip after the jump.
Two small circles mark the places where edges cross each other. Which edge comes at the front and which at the back? In a three- dimensional world simultaneous front and back is an impossibility and so cannot be illustrated.