Cool Optical Illusions - A growing collection of optical illusions and eye tricks, including original illusion pictures and a collection of optical illusion desktop wallpaper.
Cut the knot: Visual Illusions - A collection of about 20 illusions - all accompanied by Java applets. Interactively changeable attributes help investigate which ones are in fact responsible for tricking the brain.
Eluzions' Optical Illusions - Contains many optical illusions illustrating a wide range of visual anomalies and surprising optical effects. A free screensaver, posters, and educational explanations are also provided.
Eye Magic: Optical Illusions - Offers a number of optical illusions for viewing, as well as explanations on how they work.
Eyetricks.com - Optical illusions, 3D stereograms and anaglyphs, fractals and brain teasers
IllusionWorks - A multimedia museum of optical and sensory illusions, with online demonstrations and explanations.
Just Optical Illusions - Focus on geometric optical illusions by Gianni A. Sarcone and Marie J. Waeber
Optical Illusions? - Comments on the terms 'Optical Illusion' and 'Visual Illusion'.
Optical Illusions Etc - A collection of various forms of optical illusions with explanations, including illusions conveyed through fractals, architecture, art, advertising and real life encounters.
Optillusions - A collection of riddles and optical illusions of many different forms with thumbnail browsing.
Planet Perplex - Selection of optical illusions, hidden images, impossible objects and upside down images.
Skytopia - Dynamic Optical Illusions - A selection of old, new and original optical illusions. Many pictures are enhanced via the use of 3D and animation.
Subliminal Messages - Impossible figures, optical illusions, multimedia and 3D puzzles.
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