In a way “Monsters”, “Soldiers”, “2 Monoliths” and “Perspection” Illusions work, this image has the same effect. You are aware that all three pairs in the picture below are of the same size, or aren’t you?
Published by James Dean
James is the manager of moillusions.com. He spends his time finding the most popular optical illusions so that YOU keep coming back to your site for more! Check him out on https://plus.google.com/u/1/109932087769818686311/ View all posts by James Dean