Famous optical illusions, Paradox, Distorting, Ambiguous, Perspective illusion.
Resource for Cool optical illusion effect, Ambiguous images, Impossible objects, Sidewalk chalk drawings, Julian Beever, Cognitive illusions, Size illusion, Jastrow illusion, Ebbinghaus illusion, Chubb illusion, Hering illusion, Penrose triangle, Penrose stairs, Blivet, perceptual abstraction, Trompe lâ?Toeil, Trompe loy, perception, anamorphosis, Trompe loeil.