A $130 million renovation -- reinvention, actually -- has turned the former Museum of Science and Industry into Exposition Park's newest attraction. Using high-tech sleight-of-hand, the center stimulates kids of all ages with questions, answers, and lessons about the world. One of the museum's highlights is Tess, a 50-foot animatronic woman whose muscles, bones, organs, and blood vessels are revealed, demonstrating how the body reacts to a variety of external conditions and activities. (Appropriate for children of all ages, Tess doesn't possess reproductive organs.) Another highlight is the new Air and Space Gallery, a seven-story space where real air- and spacecraft are suspended overhead.

There are nominal fees, ranging from $2 to $5, to enjoy the science center's more thrilling attractions. You can pedal a bicycle across a high-wire suspended 43 feet above the ground (demonstrating the principle of gravity and counterweights) or get strapped into the Space Docking Simulator for a virtual-reality taste of zero gravity. There's plenty more, and plans for expansion in the works. The IMAX theater boasts a screen seven stories high and 90 feet wide, with state-of-the-art surround sound and 3-D technology. Films are screened throughout the day until 9pm and are nearly always breathtaking, even the two-dimensional ones.