The Muttontown Preserve is Nassau County's largest nature preserve and certainly one of the most sublime settings on Long Island, spanning over 550 acres of fields, woodlands, ponds and estate grounds, including the Chelsea Mansion and Nassau Hall. The Preserve has plenty for all to do and see! In the winter, visitors can make use of the cross-country trails and during the warmer seasons take in the scenery with local wildflowers and trees, birds, reptiles, amphibians and other wildlife. Maps and brochures are available for self-guided tours. Chelsea Mansion is available for private and special events. During the winter it is also an excellent location for cross-country skiing.