While new optical illusions go viral all the time, here are some of the most famous illusions that have kept us scratching our heads for years.

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Think you can trust your eyes? Think again. What feels undeniable at first glance is sometimes a surprise, an illusion, or an ...

Everyone loves an optical illusion — even if they leave us completely stumped — and they're all around us in the natural world. From an underwater waterfall in the Indian Ocean to a surrealist scene ...

Op art, once a 1960s sensation of mind-bending patterns and illusions, is finding fresh life through AI tools, 3D printing, and advanced printing techniques. Artists and designers are merging ...

Allen Institute researcher Jerome Lecoq points to one of the diagrams that was used in a study focusing on how the brain interprets optical illusions. (Allen Institute Photo / Erik Dinnel) Our brains ...

Most people use the terms “optical illusion” and “visual illusion” interchangeably, much like “fluid” and “liquid” or “sofa” and “couch” are synonyms. At first glance, this might be seemingly pedantic ...

Take a look at these interesting images taken from confusing perspectives. Take a minute to glance at some odd, confusing ...