This is one of the finest museums of its kind in North America, with constantly changing hands-on exhibits that engage children up to about age 8 in discovery. Fire Station No. 1 is a real fire hall with a pole and kitchen. Children can build a car on an assembly line and send it careening down a test ramp at the Assembly Plant. Or, little ones can enter Bubbles Playscape, where science and soap collide in kid-made bubbles up to six feet long. One of the biggest attractions is the Center for the Young Child, a 3,700-square-foot playscape aimed at newborns and toddlers and their caregivers.