On Saturday, March 14, 2026, the Exploratorium invites the public to join an all-day celebration of Pi (π) Day, with special ...

You probably already know how to play Tic-Tac-Toe. It's a really simple game, right? That's what most people think. But if you really wrap your brain around it, you'll discover that Tic-Tac-Toe isn't ...

Artist Bob Miller's Light Walk at the Exploratorium will change the way you look at light, shadow, and images.

This seasonal celebration of hands-on tinkering and experimentation invites everyone to create, explore, and color their ...

Every day, look at the food in your Mold Terrarium. For the first two or three days, you probably won't see much. But soon you should see blue or green or white fuzzy stuff growing on some of the ...

It's all done with mirrors. Touching the spring seems easy, but the image of a spring is made by a big curved concave mirror. Light from a real spring bounces off the mirror to form the image you see.

Take off and fly in a mirror that makes half your body look whole. Here’s an exhibit where watching is at least half the fun. Positioned at one end of this large flat mirror, you can create any number ...

Visiting San Francisco? Bundle Exploratorium admission with 3 more top San Francisco attractions and save up to 46% with CityPass® tickets.

It might seem obvious to say that earthquakes do most of their damage by shaking the ground. But groundshaking is actually a complex phenomenon. Engineering the seismic safety of a structure involves ...