At first glance, this vibrant optical illusion of orange ovals on a blue background appears to twist and move, drawing your gaze into a hypnotic tunnel. While it’s entirely static, the clever use of ...

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.

Think you can trust your eyes? Think again. What feels undeniable at first glance is sometimes a surprise, an illusion, or an ...