Optical illusions are older than you think. The first optical illusions date back to 20,000 BC and took the form of cave sculptings. Nowadays they are found all over the place – on screens, in books ...

The op-art loving side of the internet has developed a new obsession – the reverspective optical illusion. Taking Reddit by ...

Optical illusions challenge: Think you’ve got sharp eyes and a quick brain? Try this optical illusion IQ test that’s leaving even the brightest minds puzzled. This brain teaser challenges you to find ...