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Hidden Circles Illusion
How many circles can you spot? Hint: There’s 16 circles and 9 lesser complete circles. Focus on the X to see them.
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Leaning Tower Illusion
The leaning tower illusion won the Best Visual Illusion of the Year Contest 2007 first prize. A simple illusion but strikingly novel. The two photos of the leaning tower of pisa are the same but one has the impression that the right side leans more.
Source: Neural Correlate
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