This family favorite has more than 100 hands-on exhibits in its sprawling galleries. Earth Exploration takes you through fossil layers to the earth's core for a lesson in plate tectonics. Spectrum of Life introduces you to the animal and plant kingdoms in a simulated rain forest. Light of Wisdom explains basic principles of light and sound through interactive exhibits, and simulators in AV Paradise put you in a plane's cockpit and on television. Children's Technoland has a voice-activated fountain and a miniature construction site. Two IMAX theaters and a "4-D" IWERKS theater screen larger-than-life movies, though some are in Chinese. All signs are in English. Avoid visiting on weekends and during school holidays or prepare to face massive crowds.