"Everything we think is real is, in some way, an illusion." Former NASA illustrator Kurt Wenner makes incredible, brain-busting chalk illusions. His works start with diligent planning, beginning with ...

“I like the science behind it. I love to see people’s reaction,” says artist Naomi Haverland of her 3D art. The Florida resident shares her process for creating optical-illusion chalk art and vibrant ...

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A stroke of colorful chalk is never quite set in stone, or upon concrete, rather, if you happen to be specifically talking about the works created by madonnari, those talented artists who create ...

Optical illusions have taken the internet by storm. They provide a dose of fun and challenge people as well. These illusions encourage people to think in new ways and improve their observation skills.