The MassGIS Protected and Recreational OpenSpace data comprise a set of related data layers that represent parklands, forests, golf courses, playgrounds, wildlife sanctuaries, conservation lands, water supply areas, cemeteries, school ball fields, and other open land that may be classified as protected and/or recreational in use. Not all lands in this layer are protected in perpetuity, though nearly all have at least some level of protection. The layer includes lands owned by the state, cities and towns, federal agencies, and private and non-profit entities.The OpenSpace layer includes three feature classes: * OPENSPACE_POLY - polygons of recreational and conservation lands as described above * OPENSPACE_ARC - attributed lines that represent boundaries of the polygons * CHAPTER61_POLY - polygons that represent interest overlays, including conservation restrictions, agricultural preservation restrictions, or other legal interestsThese feature classes are stored in a feature dataset named OPENSPACE that includes ArcGIS geodatabase topology.