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.

The internet has been left bitterly divided over a strange audio illusion. In a viral clip, posted by the New Zealand-based ...

Optical illusion personality tests are interesting images that trick the brain and eyes into believing what a person sees ...

This brain-frazzling optical illusion is enough to put your head into a spin. The purple-and-yellow image looks as though it’s both three-dimensional and moving but is in fact stationary and flat.

A few years ago, the internet was going bonkers for optical illusions, from the infamous dress to a cat in the desert. Now there’s a new kind of illusion in town. It will make you see shimmering rays ...

Optical illusion personality tests often trick us into believing what we see first in images with many layered objects.It is, ...

Rub those sleepy eyes and put your spectacles on, folks -- this optical illusion is a real doozy. Redditor NLS83 posted a head-scratching optical illusion Wednesday that could have you staring at your ...

Have you ever looked at the nighttime horizon and gasped at the sight of a spectacularly large moonrise? Typically, if you glance up at the sky hours later, the Moon will seem to have shrunk. Dubbed ...