What image do you see? A beautiful young woman, or an old and haggard woman?
(I see the young woman first; I have to stare at it for awhile before the old woman's face is visible to me.)
The faces of two facing men, or a vase? (The faces are the first image I see)
Floor tiles at the Basilica of St. John Lateran in Rome. The pattern creates an illusion of three-dimensional boxes.
Or how about this one:
When you look at the picture up close you see Albert Einstein. Now stand up and take several steps back, roughly 15 feet away,
It will become... Marilyn Monroe.
These are fun! For more, go to this page: