The park's 20 miles of trails and carriage roads are open year-round. They are available for hiking and equestrian use in the spring, summer, and fall. When there is adequate snow cover, trails are groomed by the Woodstock Inn Nordic Center for snowshoeing and cross-country skiing. The visitor center is open Thursday-Monday (closed Tuesday and Wednesday) from 10:00 am to 5:00 pm, Memorial Day week
end (late May) to October 31. Tickets for tours of the mansion and grounds are available for purchase on Recreation.gov. The boyhood home of George Perkins Marsh, one of America's first conservationists, and later the home of Frederick Billings, the property was given to the American people by its most recent owners, Laurance S. The park was created by an Act of Congress and signed into law by President George Bush on August 26, 1992. Under law, the purposes of the park are as follows:
- To interpret the history and evolution of conservation stewardship in America;
- To recognize and interpret the contributions and birthplace of George Perkins Marsh, pioneering environmentalist, author of Man and Nature, statesman, lawyer, and linguist;
- To recognize and interpret the contributions of Frederick Billings, conservationist, pioneer in reforestation and scientific farm management, lawyer, philanthropist, and railroad builder, who extended the principles of land management introduced by Marsh;
- To preserve the Marsh-Billings-Rockefeller mansion and its surrounding lands; and
- To recognize the significant contributions of Julia Billings, Mary Billings French, Mary French Rockefeller, and Laurance Spelman Rockefeller in perpetuating the Marsh-Billings heritage.