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 ...

Optical illusions like the one at the top of the page may not actually be bright, but our brains — and now it seems our eyes — think they are. This radial sunburst illusion is known as the Asahi ...

This tricky illusion hides a single golden “30” among a sea of identical “80s.” Can you spot it within 5 seconds?

Walking through this museum may cause you to look twice and think, “Did I just see what I thought I saw?” The Museum of Illusions, which opens Thursday on Pittsburgh’s North Side, offers various ...

The Reddit account has shared a picture of a place filled with leaves. People need to spot a brown wood frog in the picture, which is much harder than it seems to be. The redditor has captioned the ...

Dr Maria Santacà describes how not only how fish and birds perceive their worlds, but also how ecological pressures shape the ...

This new optical illusion is testing everyone’s observation skills; only a few people can find everything in 15 seconds.

All over the world, there are naturally occurring optical illusions that captivate spectators. Cloud formations can sometimes make it seem like there's an ocean or a UFO in the sky. Whether it is salt ...