Chicago Botanic Garden
Among the 28 different gardens here are the three-island Malott Japanese Garden, the five-acre Evening Island, and the Grunsfeld Children's Growing Garden. Three big greenhouses showcase desert, tropical, and semitropical climates where beautiful and fragrant flowers bloom year-round. Weather permitting, 35-minute tram tours are offered daily and are free with admission from late April through late October. Special summer exhibitions include the 7,500-square-foot Model Railroad Garden with 17 garden-scale trains traveling around nearly 50 models of American landmarks, all made from natural materials. Butterflies & Blooms, a 2,800-square-foot white mesh enclosure, is filled with hundreds of colorful butterflies interacting with plant life; both are free with admission.