Some optical illusions are pretty basic and fly under the radar, unseen forever. Others have taken the web by storm, going viral and confusing everyone. It's interesting to notice that everyone sees ...

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.

Architects and artists have clever ways of confusing your eyes and creating optical illusions with their building designs.

Footage from Casa de Pedra Cave in São Paulo, Brazil, captures a striking optical illusion that makes a waterfall appear ...

Optical illusions are fun. They momentarily break down any illusions about always being able to see things clearly. In fact, ...

A viral optical illusion is said to reveal the viewer’s strongest personality traits including whether they’re too independent or have a strong intuition. The visual psychological test is one of many ...

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

A global chain of museums offering interactive illusion experiences is launching in California’s capital in November, with ...

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

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 ...

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 Yale neuroscientists ...