Learn with us online while the Exploratorium is temporarily closed. You can help us reopen—donate today.
A square wheel can roll smoothly—if the "road" is the right shape.
Where: Osher Gallery 1: Human Phenomenon
Discover the strength of an arch by building a bridge.
Where: Gallery 5: Outdoor Exhibits
(Embarcadero at Green Street)
San Francisco, CA 94111
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