The Doyle Reservation, located in the city of Leominster, Massachusetts, is a 170-acre (69 ha) landscaped urban park and open space reservation managed by The Trustees of Reservations (TTOR), a non-profit conservation organization. It is also the location of TTOR's Doyle Center: a conservation education center, regional office, and green building initiative. The property consists of three main areas: Pierce Meadow, a landscaped urban park and former estate of Harry W.