The world's most famous optical illusion

"All is Vanity"

Charles Allan Gilbert drew this optical illusion picture in 1892, when he was 18 years old. After he sold it to Life Magazine and they reproduced it as a print, it became famous.

This is an ambiguous optical illusion, where we see more than one thing in the picture. If we view the overall image, we see a human skull. When we focus on the details of the picture, we see a woman looking in her vanity mirror.