From The Dress to legless women, the internet is filled with optical illusions that are both accidental and intentional.

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.

Our pick of the best optical illusions of all time will leave you amazed and confused in equal measure.

For over 2,000 years, scholars and admirers have alleged that the ancient Greek building’s nearly imperceptible curves were ...

The best optical illusions continue to baffle us, and it seems that powerful branding can also sometimes be responsible. We all know that a Coca-Cola can is red. That is except when it's either Coke ...

A supposedly 3D optical illusion has been posted online and is possibly the most divisive I've ever seen on the optical illusion. Comments are either steadfastly denying any effect whatsoever, with ...

Forget that AI action figure trend. Using an optical illusion to make someone look like a doll trapped in toy packaging is much more creative. When I first saw the video below, I thought there must be ...

One of Athens' crowning jewels is the Parthenon, a classical temple on the Acropolis that overlooks the Greek capital.

A mathematician at the University of Oxford has used modeling to challenge the architectural understanding of the Parthenon.

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

A mathematician says the Parthenon's famous optical illusion may never have existed, challenging an old myth about ancient Greek design.