Must-see optical illusions 01. Super Mario optical illusion Sometimes the best optical illusions take us by surprise, and this mind-bending Mario illusion has certainly ruffled some feathers online.

A grayscale ballerina who appears to be moving. A human who can fit in a doll box. A black-and-white prism that appears to ...

The overall winner of Best Illusion of the Year was The Static Spin by Saleeta Qadir and Bernhard Egger of Germany. The ...

The overall winner of Best Illusion of the Year was The Static Spin by Saleeta Qadir and Bernhard Egger of Germany. The ...

If you ever checked out a book on optical illusions from your local library as a kid, you probably saw the classic Schröder’s stairs illusion: a 2D illustration of zig-zag lines that creates ...

And like all the best illusions, it seems this one keeps on giving, as new scientific research has revealed that your perception of it could be influenced by one unexpected factor.

The best illusion at the Museum of Illusions is the one that makes it look like you’re desperately dangling high off the front of the Old Courthouse. No, wait.

The contest, sponsored each year by the Neural Correlates Society, was started in 2005 by Susana Martinez-Condes and Stephen Macknik as part of the European Conference on Visual Perception in La ...

How optical illusions work has been long-debated among scientists and philosophers, who wonder whether these illusions stem from neural processing in the eye or involve higher-level cognitive ...

To prove her point, Martinez-Conde organizes an annual "Best Illusion of the Year" competition. This year’s contest happens today, May 14.