Does it feel like the walls are closing in?
Tease your brain with five interactive illusions. You won't believe your eyes.
If you stare at this dot, for few moments it disappears.
Interact with the Cafe Wall Illusion.
Four exhibits small enough to fit on postcards.
Is it light gray or dark gray? It depends on the surroundings.
Your eye movements make this design seem to shimmer.
Sometimes things are not as they appear.
See colors that aren't really there.
Can you make your palm squirm?
Leonardo's famous painting is used in an interesting perceptual experiment.
This ancient temple holds a secret...can you reveal the mystery?
ExploratoriumPier 15, San Francisco, CA 94111