This optical illusion was submitted by Anh Pham.

This optical illusion was submitted by Anh Pham.

Is this shape possible?

This optical illusion was submitted by Anh Pham.

This optical illusion was submitted by Humberto Machado.

Here is a much clearer image of Hillbilly and Horse. What can you see? A man or a horse? if you missed the horse just check again in the center of the illusion.

This optical illusion was submitted by Humberto Machado.

A recent painting I made, to mark the demise of Oswald Stanley.

This optical illusion was submitted by Robbie from http://www.psychedelic-art.com.

Can you figure out the faces in this creative illusive drawings by Humberto Machado? Count how many faces do you see, you really need to see the image with concentration to find out the faces.

This optical illusion was submitted by Humberto Machado.

One more creative illusive drawing by Humberto Machado. See carefully and try figuring out how many faces do you see in this illusion.

This optical illusion was submitted by Humberto Machado.

Can you see something unusual in this creative illusive drawings by Humberto Machado? If not try seeing the picture again.

Hint: How many faces do you see?

This optical illusion was submitted by Humberto Machado.

Zigzag-patterned disks rotate in opposite directions in an abstract illustration of the illusory motion variety.

This optical illusion was submitted by Mark Grenier.