Located on 2,740 acres in Hillsborough, N.J., the mission of Duke Farms is to be a model of environmental stewardship. Through the beauty of its natural setting, the diversity of its wildlife, and the scope and quality of its educational programs, demonstrations and research, Duke Farms inspires people to transform their approach to conservation and to start building a more sustainable future. Duke Farms is open to the public 8:30 a.m. to 6 p.m., Thursday through Tuesday (closed on Wednesday). There is no charge to visit the orientation center or to walk or bike the 18 miles of trails on the property.