The Trustees of Reservations is one of the oldest land trust and conservation organizations in the United States. It owns and cares more than 100 special places that are spread across an area of over 25,000 acres. The organization maintains several locations throughout Massachusetts. The Trustees of Reservations also manages gardens, cultural landscapes and historic houses. It participates in various community events and programs. The organization provides various types of membership plans. The Trustees of Reservations conducts several field trips for youths. Its Doyle Conservation Center can accommodate up to 170 people for various special events, such as weddings and corporate and private functions.