WOW! The impossible is now real!
Posted by Dave Bath on 2009-01-22
Do yourself a favor and go through the slideshow at Scientific American called "Sculpting the Impossible: Solid Renditions of Visual Illusions" (2009-01-21) – no trick photography or image manipulation involved.
Now look at the lithograph it is based on: "Relativity" by M.C. Escher.
Care to nominate a favorite from the slideshow? Too hard for me!