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Central Tucson—which has most of the shops, restaurants, and businesses—is roughly bounded by Craycroft Road to the east, Oracle Road to the west, River Road to the north, and 22nd Street to the south. The older Downtown section, east of Interstate 10 off the Broadway-Congress exit, is smaller and easy to navigate on foot. Downtown streets don't run on any sort of grid, however, and many are one way, so it's best to get a good, detailed map. The city's Westside area is the vast region west of Interstates 10 and 19, which includes the western section of Saguaro National Park and the San Xavier Indian Reservation.
Youngsters are encouraged to touch and explore the science, language, and history exhibits here. They can examine a patient in the Bodyology Center and care for (stuffed) doggies at the PetVet exhibit. Investigation Station has air-pressure tubes where balls and scarves whiz around, and there's a Discovery Garden for all ages to climb, slide, and burn off steam. Admission is free on Thursday evenings from 5 to 7 pm and on second Saturdays.
