Below is the winner of the Best Visual Illusion of the Year Contest 2007 organised by The Neural Correlate Society.

The two images of the Leaning Tower of Pisa are identical but it gave an impression that the right tower leans more than the left… simple yet amazing. [Why?]

Optical illusion with the Leaning Tower of Pisa
“The Leaning Tower Illusion” by Frederick Kingdom, Ali Yoonessi and Elena Gheorghiu

The Neural Correlate Society is a nonprofit organization that promotes scientific research into the neural correlates of sensory perception, awareness, and cognitive experience.


Optical illusion… read the words between the blocks. If you can’t read it, just get off your chair and try reading it a metre (or two) away from the screen.

Optical illusion
(Hat tip to Newopticalillusions)



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