A mind-boggling optical illusion in a tunnel in the US left one driver so perplexed that he didn't want to drive on.
A mind-bending optical illusion shows two people hugging one another - but which legs belong to which person ?
Recently uploaded footage shows what looks like a dome-shaped UFO slowly moving along the horizon.
Intriguing footage shows an airliner seemingly hovering motionless in the air - but is it just an optical illusion?
A very strange optical illusion showing what looks like a floating wheelie bin has recently gone viral online.
This seemingly unremarkable image appears to show a tranquil shoreline on a starry evening, or does it ?
According to researchers, your age group can be determined by how you initially interpret this image.
This fascinating optical illusion by mathematician Kokichi Sugihara has left Internet users scratching their heads.
An intriguing optical illusion has been leaving social media users scratching their heads this week.
Stop-motion animator Kevin Parry has created a short video clip that seems to defy the laws of physics.
An intriguing optical illusion involving a plate of strawberries has been doing the rounds online.
An intriguing optical illusion has been caught on camera from the shores of North America's largest lake.
A recent photograph Tweeted by Indiana governor Mike Pence has left many people scratching their heads.
A remarkable optical illusion posted on Twitter has left many Internet users scratching their heads.
Scientists have come up with a novel new way to determine whether someone is prone to hallucinations.
Researchers have identified a subtle optical illusion responsible for the painting's enigmatic smile.
Up until now the powerful waves of plasma observed on the surface of the sun known as "solar tsunamis" were thought to b...