Duck Into Kaleidoscope , one of the Exploratorium's popular exhibits puts you in the middle of the action. A narcissisist's dream come true. A series of lenses transmit your face 20 feet from your head at Image Relay . You can build a free-standing catenary arch out of blocks at this exhibit. Red, green, and blue lamps cast complimentary cyan, magenta, and yellow shadows at Colored Shadows.
Sound activates hundreds of small lamps on the Enchanted Tree.
The Ames Room. This room actually has no square corners. They only look that way when viewed from this point. This creates bizzare perspective size distortions. The Momentum Machine gives you a visceral understanding of the meaning of conservation of angular momentum.