Gently creating gigantic bubbles, building a castle, running a Korean restaurant and starring in a dance video are all part of the non-stop –€” occasionally messy — fun at this multi-level museum. Even crawling infants have a place to play in the outdoor-themed Habitot, but curious and playful preschoolers will have the best time exploring the three main exhibits: Earth World with Minnesota habitats, Our World with neighborhood businesses and careers, and World Works, with a chance to make paper, run a factory, explore the power of water and the magic of light, color and shadows. There are usually two traveling exhibits, as well as one of the Twin Cities’€™ best toy stores, and a seasonal Rooftop Art Park. (Insider’€™s tip: No admission on the third Sunday of each month and free Metro Transit to the museum on second Saturdays.) If you work up an appetite, take a quick walk to two St. Paul favorites: Mickey’€™s Diner and Candyland.