At first glance, this beautiful blue-toned illustration looks like nothing more than a decorative window opening into a surreal cosmic background. But take a closer look: which way is the window ...

At first glance, this illusion seems simple: two windows on either side of a brick wall, each with a birdcage hanging outside. But stare longer, and you’ll notice that the perspective makes it ...

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A couple of years ago an optical illusion came along and almost broke our site. Over three million people read an article about the most dizzying illusion ever to grace our screens – the rotating ...

Optical illusions are great fun, and they fool virtually everyone. But have you ever wondered if you could train yourself to unsee these illusions? Our latest research suggests that you can. Optical ...