Masks are required for all visitors 2+. Vaccines recommended. Plan your visit
Your experience of the world influences what you see.
If you want to stay hidden, you'd better stay still.
Investigate how to predict the color of an afterimage.
Art and science meet in a tube of mirrors.
Mira fijamente un color, pero ve otro.
Proyecta imágenes del sol sobre un papel usando tus manos.
Test your vision—just by moving your head.
See shadowy shapes floating inside your own eye.
Submerge yourself in underwater color perception.
Is pure water colorless?
Control the (apparent) size of a hole with your brain.
(Embarcadero at Green Street)
San Francisco, CA 94111
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