Thanks to scienceduck, we got our first user-submitted Illusion! I encourrage you to submit all of your optical illusion material that you think we should publish here. As the title say, this one is taken in Toronto. I wasn’t sure at first if it is just a painting on the builiding wall, or is it something like billboard attached to it’s side. Jump inside this article and see another picture, this time taken from different angle. Also be sure to visit scienceduck’s homepage for more wonderfull images and optical illusions, taken by camera.