Tue.–Sun. through Sept. 5, 10 a.m.–5 p.m.
Exploratorium (Pier 15, Embarcadero & Green Sts.)
This first North American exhibition features enormous self-propelled kinetic sculptures, “strandbeest” (“beach animals” in Dutch) constructed mostly of PVC tubing. See artist sketches, video, live demos, and photography in the only West Coast site of the tour. $24.95, 415-528-4444, exploratorium.edu