The Douglas-Hart Nature Center, located in Mattoon, Illinois, is a nature reserve that offers visitors different Illinois habitats, field programs, environmental educational classes, and volunteer opportunities for all ages. In the 1960s Helen Douglas-Hart made her dream, a 33-acre nature preserve in Coles County, Illinois, a reality. Today, DHNC provides protection for three of Illinois primary habitats: tall grass prairie, native forest woodlands, and wetlands, on approximately 70 acres. There are two miles of trails that pass through each local habitat.