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Open Image ModalCan you see the hidden tiger? No, not that one...
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Open Image ModalAre the lines made out of the blue squares parallel? You bet they are.
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Open Image ModalYou can probably see Albert Einstein in the picture. Stand up and take a look from ten feet away. Who do you see now?
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Open Image ModalThis is a variation on the Penrose Triangle. You could climb the stairs forever and never get any higher. That is only possible in two dimensions. This endless staicase can be found also in the paintings of M. C. Escher or also in the movie Inception by Christopher Nolan.
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Open Image ModalAre these windows around the corner from each other, or inverted and facing each other?
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Open Image ModalThere should be 11 faces on this picture. Average people see 4-6, sensible 8-10. The best see all 11, schizophrenics and paranoids 12 and more. And you...?!
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Open Image ModalThe impossible cube!
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Open Image ModalTry to step back or shake your hand from side to side to see a divine image
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Open Image ModalA swan, or a squirrel...?
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Open Image ModalSurface color of both A and B parts is identical. Just use a finger to cover the place where both parts meet and you'll see.
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Open Image ModalWhat do you see? A frog on a pond, or a horse?
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Open Image ModalA stern-faced solider in his helmet, or a man bending over? You decide.
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Open Image ModalA face in a Venetian mask, or a tender embrace?
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Open Image ModalHow many horses can you see?
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Open Image Modal'Crawling Snakes' by Akiyoshi Kitaoka. Moving Illusons are static images where you can see illusory motion due to color contrasts and shape position.
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Open Image ModalA classic
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Open Image ModalThe whole world in our hands...
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Open Image ModalMoving Bicycle by Akiyoshi Kitaoka
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Open Image ModalA nighttime snack, or something altogether more sinister?
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Open Image ModalDuck or bunny?!
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Open Image ModalDon't look down!
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Open Image ModalIf you look at this picture from bigger distance you will definitaly see a familiar face.
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Open Image ModalYou probably see angry face on the left and calm face on the right. Now step away from your computer screen. You should see the two faces swap over! This hybrid image was created by Phillippe G. Schyns and Aude Oliva of the University of Glasgow. It proves that we may not be seeing what's actually there, all the time.
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Open Image ModalArgh!
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Open Image ModalThere's a face somewhere in this pile of coffee beans. Can you see it?
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Open Image ModalThis impossible tribar, also known as the tribar is one of the most well-known optical illusions.
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Open Image ModalHow many animals can you spot?
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Open Image ModalBoth green lines have the same length. This Ponzo illusion uses the fact that human brain interpretes the image with perspective, however, it's just a simple 2D image
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Open Image ModalHow many faces can you count on this Don Quijote painting by Octavio Ocampo?
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Open Image ModalSalvador Dali and a strange woman...
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Open Image ModalA beautiful scene, but can you see what's hidden in it? (Clue: they're both sleeping!).
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Open Image ModalThe bigger picture is a little spookier...
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Open Image ModalFeel seasick yet?
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Open Image ModalCan you see the waves moving? If not, try to move your head a few times or scroll up/down to see the illusion.
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Open Image ModalA good one for Halloween
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Open Image ModalBelieve it or not, A and B are the exact same size...
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Open Image ModalTaking the plunge!
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Open Image ModalA fully working machine
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Open Image ModalWhat a pest!
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Open Image ModalThe red and blue lines are actually the same length