Many works of Akiyoshi Kitaoka. Designs around standard illusions crafted to maximise the illusory effect.

Gallery of optical illusions, 3d art, puzzles, and visual gags.

Gallery of pictures that will trick your eyes.

Collection of illusions and images chosen for novelty and distinction from the usual set found in most collections.

A growing collection of optical illusions and eye tricks, including original illusion pictures and a collection of optical illusion desktop wallpaper.

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.

Offers a number of optical illusions for viewing, as well as explanations on how they work.

Optical illusions, 3D stereograms and anaglyphs, fractals and brain teasers

A selection of standard optical illusions along with some online puzzles and games.

A multimedia museum of optical and sensory illusions, with online demonstrations and explanations.

Focus on geometric optical illusions by Gianni A. Sarcone and Marie J. Waeber

The stress here is on relative novelty and interactivity, in combination with a scientific background. Regularly updated.

Various illusion resources, including some illusion puzzles.

Site contains a collection of optical illusions, online games, and other fun things.

A collection of optical illusion images, 3D street art, and flash demonstrations.

Amazing Pictures and Effects

Blogging All Illusions: optical, magical, visual, science, puzzles, jokes, funny pictures etc...

Offers a collection of illusions, brain teasers, and puzzles for children.

Comments on the terms 'Optical Illusion' and 'Visual Illusion'.

A selection of common images.

A collection of riddles and optical illusions of many different forms with thumbnail browsing.

Selection of optical illusions, hidden images, impossible objects and upside down images.

A selection of old, new and original optical illusions. Many pictures are enhanced via the use of 3D and animation.

Impossible figures, optical illusions, multimedia and 3D puzzles.