13 Optical Illusions That Will Blow Your Mind

Commuters step around a 3D art exhibit entitled "Escape the Rat Race" painted on the concourse of Victoria railway station in London to promote a pest control company, Wednesday, Jan. 18, 2012. (AP Photo/Sang Tan)

  When it comes to admiring 3D street art, it’s often a matter of perspective — look at a street artist’s design from one angle and it appears flat and distorted, but from another the illustration comes alive. The process is called anamorphosis, and requires the viewer to stand at a certain vantage point in order to view the […]

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