Shigeo Fukuda has masterfully recreated Escher’s Waterfall — where water seems to flow uphill — in a small scale model. Video clip after the jump.
Everything seems to be in place, yet we seem to be in a strange universe where water flows uphill. What is wrong with it? Well, nothing is wrong with it. It is just our minds trying to equate the lines Escher drew with what our senses perceive of the real world.