Administrated by the Masschusett's Department of Conservation and Recreation, Walden Pond State Reservation is a 462-acre state park located where Henry David Thoreau wrote his seminal work, Walden, from 1845 to 1847. The park features the famous Walden pond, where visitors may swim, see a replica of Thoreau's cabin, try hiking trails, check out a gallery, a bookstore and a gift shop.