DOWNTOWN. This Tucson institution is brimming with fun learning activities that cover several topics. The Dinosaur World exhibits make this the perfect companion to the T Rex Museum for your little paleontologist. If you have a budding train engineer or firefighter on your hands, they'll love being able to dress up like their heroes and role play. Young scientists will be enamored of "ZOOM Into The Zone," which is based on the PBS show, and mini conservationists will appreciate the green approach in the "Electri-City" exhibit. The art studio appeals to petite Picassos, and the bakery and farmer's market are ideal for Julia Child wannabes. Whatever your little ones aspire to, they can try it out here first, and have a blast doing it!