Up or down?
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What do you see?
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Musician or a woman?
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Hermann-Grid effect. Can you count black dots?
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These lines are completely parallel
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A lady, old man and a old woman
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See the text? 
3 D Illusions
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How many????
(faces, animals…)
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How many legs?
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How many fox?
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Can you find 13 faces?
and people?
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Find out 9 people!
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The same man
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Both circles in the center are equal!
These pictures move?
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Focus on the plus sing in the center. What did you see?
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Note: Some of these images are copyrighted by Akiyoshi Kitaoka