Walking into this fascinating "museum of science, art, and human perception" is like visiting a mad-scientist's laboratory. Most of the exhibits are supersize, and you can play with everything. After moving into larger digs on the Embarcadero in 2013, the Exploratorium has even more space for its signature experiential exhibits, including a brand-new Tinkering Studio and a glass Bay Observatory building, where the exhibits inside help visitors better understand what they
Quintessential exhibits remain: Get an Alice in Wonderland feeling in the distortion room, where you seem to shrink and grow as you walk across the slanted, checkered floor. In the shadow room, a powerful flash freezes an image of your shadow on the wall; jumping is a favorite pose. "Pushover" demonstrates cow-tipping, but for people: stand on one foot and try to keep your balance while a friend swings a striped panel in front of you (trust us, you're going to fall).
More than 650 other exhibits focus on sea and insect life, computers, electricity, patterns and light, language, the weather, and more. "Explainers"—usually high-school students on their days off—demonstrate cool scientific tools and procedures, like DNA sample-collection and cow-eye dissection. One surefire hit is the pitch-black, touchy-feely Tactile Dome ($15 extra; reservations required). In this geodesic dome strewn with textured objects, you crawl through a course of ladders, slides, and tunnels, relying solely on your sense of touch. Lovey-dovey couples sometimes linger in the "grope dome," but be forewarned: the staff will turn on the lights if necessary. Patrons must be at least seven years old to enter the Tactile Dome, and the space is not for the claustrophobic.
Piers 15–17, San Francisco, California, 94111, USA
415-561–0360-general information; 415-561–0362-Tactile Dome reservations