Optical illusions come in all forms, from simple tricks of the eye to complex geometric designs, but my personal favourites are the simple illusions that leave my brain well and truly frazzled. While ...

Optical illusions are all over the internet, but it's rare to see them cropping up in the real world. Street artist Vile is changing that with his astonishing graffiti art, creating mind-bending ...

Or do you see something else?

For those that love optical illusions – and a good explanation for the mind-bending properties of them – finding one you haven't seen before is a real treat. And that's just happened with this (I ...