Optical illusion challenges keep people engaged in a fun way. These viral puzzles, designed to trick the eyes, force the brain to look twice before spotting the hidden detail. That mix of difficulty ...

Optical illusions are often described as mind-boggling, mind-bendint, brain-frying, and everything in between. But let's be honest, most of the time all they elicit is a slight smirk, or maybe the odd ...

From the cigar nestled in the brickwork to 'The Dress', many optical illusions have left viewers around the world baffled over the years. But the latest illusion is arguably one of the most bizarre ...

Hold a pencil upright in front of your face. Close one eye, look at the pencil, then open that eye, and close the other. Did you notice that your view of the pencil shifted slightly when you looked ...