Brain Teasers - Scary Optical Illusions
- Includes ambiguity pictures, scary equivocal illusions, and moving objects illusions.
- http://brainden.com/scary-optical-illusions.htm

Mighty Optical Illusions
- Offers a database of optical illusions most of them real life ones.
- http://mightyillusions.blogspot.com/

Art for Kids - The Boggler
- A collection of interactive optical illusions. Also includes links to sections featuring famous artists, interactive drawing and puzzles.
- http://www.edbydesign.com/art/boggler.html

Optical Illusions Etc
- Contains many optical illusions in blog format.
- http://illusionsetc.blogspot.com

NIEHS Kids Page -- Optical Illusions
- Presented by the National Institute of Environmental Health Sciences. A collection of illusions.
- http://www.niehs.nih.gov/kids/illusion/illusions.htm

Optical Illusions
- From the Department of Ophthalmology and Visual Science at the University of Illinois, a collection of illusions and after images.
- http://www.uic.edu/com/eye/LearningAboutVision/EyeSite/OpticalIllustions/index.shtml

Visual Phenomena and Optical Illusions
- Interactive illusions, including Benham's disk and other illusions involving motion.
- http://www.michaelbach.de/ot/

Eyetricks.com: Optical Illusions
- Collection of optical illusions, brain teasers and games.
- http://www.eyetricks.com/illusions.htm

Crazy Images
- Interactive animations and optical illusions that respond to user's input.
- http://www.crazyimages.com

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.
- http://eluzions.com/Illusions/

Eye Magic
- Collection of high quality optical illusions that come with clear explanations.
- http://www.harmsy.freeuk.com/opticalillusions.html

Counter-Rotating Spirals Illusion
- Java applet, including other illusions, such as an animated Necker cube.
- http://dogfeathers.com/java/spirals.html

M.C. Escher
- Optical illusion art, news, history, copyright and foundation information.
- http://www.mcescher.com/

Illusion Works
- A multimedia museum of optical and sensory illusions, with on-line demonstrations and explanations.
- http://psylux.psych.tu-dresden.de/i1/kaw/diverses%20Material/www.illusionworks.com/

Sandlot Science
- Interactive optical illusions, games, science projects, fun puzzles, and distortions.
- http://www.sandlotscience.com/

Magic Eye Image of the Week
- Includes a new image every week demonstrating stereograms.
- http://www.magiceye.com/3dfun/stwkdisp.shtml

Colorcube
- Illusions organized by category, including blind spot, blink effect, bordering, chromatic adaptation, colorblindness, and others.
- http://www.colorcube.com/illusions/illusion.htm

The Exploratorium's Online Exhibits: Seeing Exhibits
- Interactive illusions from the exploratorium.
- http://www.exploratorium.edu/exhibits/f_exhibits.html

Akiyoshi's Illusion Pages
- Includes anomalous motion illusions.
- http://www.ritsumei.ac.jp/~akitaoka/index-e.html

Eyetricks.com
- Collection of illusions and other mind teasing oddities. Includes illusions that you can make.
- http://www.eyetricks.com/