This one, created by Lenstore, made it to our pick of the best optical illusions we’ve seen this year. Created by the same people behind the optical illusion above, this optical illusion employs ...

The three-time winner for Best Illusion of the Year has produced 500 mathematically-designed deceptions to date. The brain cannot fathom how an optical illusion can manifest in real life ...

Using a computer model of the retina, researchers have been able to trace the cause of the expanding hole illusion ...

The real fascination of the painting is the optical illusion Pozzo created ... that had its foundations in scientific reasoning. The best painters understood how shadows and light worked ...

Garnier's newest ad campaign in Switzerland will have you scratching your head. These men appear to have the most luxurious beards we've ever seen — all thanks to Fructis, no doubt. Or do they ...

The Coffer illusion Norcia's optical illusion is so clever that it was included in the shortlist for Illusion of the Year back in 2006 – a contest most recently won by a Harry Pottery optical ...

Optical illusions can both entertain and challenge our brains, improving cognitive skills. In this task, readers are asked to find a hidden policeman within an image in just 12 seconds.

Brainteasers, puzzles, and optical illusions are not just fun and games ... Spread love this holiday season with these New Year wishes, messages, and quotes.