Can you see both the frog and the horse on this visual illusion?
This one is so famous. Turn the picture upside down to see how men see women after 6 beers.
Can you find "the hidden tiger"? Not the obvious one that everyone sees. Look for words in stripes (by Donald Rust).
A mysterious face found on Mars. This is a real photo of the surface of Mars taken by Viking 1 in 1976.
Stare at the four black dots in the center of the image for 30 - 60 seconds. Then quickly close your eyes and look at something bright (like a lamp or a window with sunlight coming through it). You should see a white circle with an image inside it.
A wonderful moving bicycle illusion. (© Akiyoshi Kitaoka: Used with permission.)
A hilarious moving curtain illusion. (© Akiyoshi Kitaoka: Used with permission.)
A nice visual illusion using perfect squares. (© Akiyoshi Kitaoka: Used with permission.)
Perfect squares one more time. (© Akiyoshi Kitaoka: Used with permission.)
Fish eating sailboats.
This one is a classic - no need to introduce.
There 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?
(don't take this one too seriously, I have even heard that there are 13 faces)
Can you identify a face in this coffee beans pile? Take your time, it is there.
Do you see some squares or rectangles? Really, this is nothing more than a bunch of lines going in every which direction, but the way our mind interprets these lines are totally different!
A perfect circle.
