An eye-catching optical illusion has been shared online asking people to spot a number hidden within the pattern - and what ...

These days, a fascinating optical illusion is viral on all the social media platforms where an amazing black and gray stripey ...

However, when they're placed together, you'll find that the two faces are actually identical shades of grey. The illusion has left many people scratching their heads, with one tweeting ...

This illusion blew my mind a few years ago,' one user wrote. 'I still think it's one of the best!' Another added: 'omg I watched the last strawberry change to grey in real time after the bars were ...