In this optical illusion, a ball that appears to roll UP the 3D printed slide, defying gravity. But if you watch the full video, you'll see the illusion depends on the angle that you view it at. 14.

The video opens to show a spinning optical illusion on a wooden pole. At first, it appears as if it is a 3D illusion. But, towards the end of the video, one can see what it actually is.

A metal ball appears to roll up this 3-D printed miniature slide in an optical illusion defying the laws of gravity. Here's how it's done.

From spinning circles to disappearing dots, these insane optical illusions aren't what they appear to be. ... come check out The Queen’s Speech- a 3D representation of this illusion!

Is this optical illusion 2D or 3D? Mind-bending viral video leaves netizens baffled Prepare to have your mind blown! Watch as these 2D circles magically transform into a jaw-dropping 3D illusion.

Joining the likes of the popular Museum of Illusions, iArtS Museum is the city's newest illusion exhibit, displaying 18 larger-than-life 3D art installations to create an Insta-worthy experience.

A 3D zebra crossing in Iceland is stunning drivers and slowing down traffic. The optical illusion artwork has gone viral on social media.