The San Francisco Exploratorium invites you to celebrate their 40th anniversary!

Play with rainbows, whirlpools, tornadoes, and shadows. Experience hands-on exhibits that explore biology, physics, visual perception, listening, and the mind.

Since its opening in 1969, the Exploratorium has grown enormously, adding groundbreaking programs and exhibitions.

As icing on the birthday cake, the museum was voted the "Best Science Center in the World."

From incredible bubbles to giant bolts of electricity, something is bound to grab your attention.

Celebrate 40 revolutionary years at the San Francisco Exploratorium.

For upcoming events and more information visit http://www.exploratorium.edu/40th/index.html