Optical illusions are the most amazing and mind-bending visuals, challenging the way we perceive things. These changing ...

Illusions are fascinating because of what ... [1] often goes unnoticed - that's where the face is upside-down but the eyes and the mouth are changed to remain the right way up [2].

In this image which is upside down, there is a "24" hidden somewhere. It is not easy to track the 24 in this image. An optical illusion is a fascinating visual phenomenon where the eyes perceive ...

That's the top left if you've turned the illusion upside down. If you're still struggling, we've included the solution at the bottom to put you out of your misery. Engaging in activities like ...

The mind-boggling visual test shows how the brain tricks the eye ... an upside-down face, despite identical changes being obvious in an upright face. It was previously believed that the illusion ...

Professor Peter Thompson of the University of York originally reported the illusion ... mouth and eyes appear to be in the normal position. But when the image is turned upside down, the unsettling ...