Optical Illusions & Other Neat Stuff

Some of these images are not what they first appear to be while others are impossibilities which, initially, may seem possible. A few of these images will seem to vibrate or rotate and others will bend, skew or change color. And it's all just your eyes playing tricks on your mind...

Hidden Picture Puzzles: Free interactive and printable puzzles to test your observation skills. Can you find all the objects hidden in the picture?

I SPY Puzzle Books: In this delightful series of children's books, author Jean Marzollo's riddles provide clues to objects hidden in stunning photographs by Walter Wick.