This optical illusion by artist Oleg Shupliak features a sketch of a woman, but there are actually four women hidden in plain sight – but good luck finding them all!

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While new optical illusions go viral all the time, here are some of the most famous illusions that have kept us scratching our heads for years.

It’s like putting on ugly goggles. Puzzle lovers are getting the heebie-jeebies over this “freaky optical illusion,” which makes people’s faces look hideously distorted. A now-viral video detailing ...

Optical illusions are interesting images that challenge our minds, inviting us to solve a puzzle and find what is hidden.And ...

Optical illusions occur naturally in different habitats and conditions across the world. Cloud formations can sometimes make it seem like there's an ocean or a UFO in the sky. Whether it is salt flats ...

Elon Musk is on top of the world after Twitter accepted his $44 billion buyout offer on Monday. But the Tesla founder, 50, appears upside down in a new optical illusion that highlights how easy it is ...

With a new series of experiments, scientists from the Massachusetts Institute of Technology say they have a better idea why we fall for a very old optical illusion called simultaneous brightness ...

Why people perceive motion in some static images has mystified not only those who view these optical illusions but neuroscientists who have tried to explain the phenomenon. Now neuroscientists have ...

The UI change is one of several subtle tweaks to Liquid Glass in iOS 27. The main improvement is a Liquid Glass slider within the Settings app that lets you adjust how clear or tinted you want the ...