City of Hiram, 342 Oak St, Hiram, GA 30141, US

Located just a few miles west of Downtown Atlanta, the Outdoor Activity Center's motto is "Where Atlanta meets the Urban Forest." The center, operated by the West Atlanta Watershed Alliance, covers 26 acres and has more than three miles of hiking trails. In addition to serving as a meeting place for community organizations and environmentalists, the OAC includes a team-building roes course, children's playground, tree house classroom, 650-gallon freshwater aquarium and a community vegetable garden. A major focus of the site is youth environmental education. The OAC offers 45-minute "interpretive" hikes, lectures, field trips and a Junior Naturalist Program. The site of the OAC has historical significance as the practice location of the Atlanta Black Crackers, the city's Negro Baseball League team from 1919 to 1952. To learn more about the center, visit the Web site. For additional information on the Watershed Alliance, go to: wawaonline.org.