Includes anomalous motion illusions.

Illusions organized by category, including blind spot, blink effect, bordering, chromatic adaptation, colorblindness, and others.

Java applet, including other illusions, such as an animated Necker cube.

Interactive animations and optical illusions that respond to user's input.

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.

Collection of high quality optical illusions that come with clear explanations.

Collection of illusions and other mind teasing oddities. Includes illusions that you can make.

Collection of optical illusions, brain teasers and games.

A multimedia museum of optical and sensory illusions, with on-line demonstrations and explanations.

Small selection of images by the artist.

Optical illusion art, news, history, copyright and foundation information.

Includes a new image every week demonstrating stereograms.

Presented by the National Institute of Environmental Health Sciences. A collection of illusions.

Some classic optical illusions with explanations for how they work.

From the Department of Ophthalmology and Visual Science at the University of Illinois, a collection of illusions and after images.

Interactive optical illusions, games, science projects, fun puzzles, and distortions.

Interactive illusions from the exploratorium.

Interactive illusions, including Benham's disk and other illusions involving motion.