Tue.–Sun. through Jan. 28
The Exploratorium (Pier 15)
Explore small, surreal worlds at this exhibition of the charming, often hilarious, mechanical sculptures known as automata. These whimsical machines are brought to life by intricate arrangements of handmade cams, cranks, and other simple mechanisms. Take a look at their exposed inner workings and investigate the low-tech mechanisms that make these automata move. $19.95–$29.95, 415-528-4444, exploratorium.edu