by Media World USA's "Best of" Series. The Children's Discovery Museum was subsequently featured on a Best of Illinois television program on CBS 2 WBBM Chicago and on the Travel Channel. The Illinois State University Planetarium offers a variety of science and astronomy programs for children from preschool to high-school. The planetarium is located in Felmley Hall of Science on ISU's campus. Public programs are usually offered on weekends and during special events. The Challenger Learning Center relocated to Heartland Community College in 2010. The Challenger Learning Center promotes leadership, communication, problem-solving and critical thinking skills while offering an interactive, simulated space and science experience through scheduled team missions for students, public and corporate groups. The Normal Public Library first began as a Reading Room sponsored by the Community Council with Margaret Hanna overseeing the collection of three hundred books. In 1938, citizens voted to help support the library through donations. In 1973, the library moved to its current location at 206 W. College Avenue. As of 2018, the library's collection has grown to nearly 200,000 materials. Nature and wildlife Normal offers many parks and facilities. As of February 2011, there are 24 parks, facilities and trails operated by the Town of Normal: Carden Park, Children and Elders Forest, Children's Discovery Museum, Connie Link Amphitheater, Constitution Trail, David S. Anderson Park, East Detention Basin, Fairview Park, Fell Park, Fransen Park, Hidden Creek Nature Sanctuary, Ironwood Golf Course, Ironwood Park, Kelly Detention Basin, Martin Luther King Jr. Park, Maxwell Park, Normal Theater, Oak Street Ball Diamond, One Normal Plaza & Community Activity Center, Rosa Park Commons, Savannah Park, Shepard Park, Underwood Park, and the West Detention Basin. Fairview and David S. Anderson parks include swimming pools; Fairview Park includes a skate park for in-line skating and skateboarding; Carden Park includes "Safety Town", a place for pre-school aged children to "drive" tricycles complete with traffic signs; and Maxwell Park has a fenced-in dog park and Champion Fields. The Bloomington-Normal Constitution Trail is a jogging, walking, cycling, and rollerblading trail that has become a hit with the community. The north–south segment of the trail follows the abandoned Illinois Central Gulf (ICG) railroad from Kerrick Road in Normal to Bell Street in Bloomington. The east–west segment intersects the north segment at Normal City Hall Annex and continues east to Towanda-Barnes Road. The Liberty Branch begins at Commerce Drive and ends at Old Farm Lakes