High Quality Content by WIKIPEDIA articles! The Department of Conservation and Recreation (DCR) is a state agency of the Commonwealth of Massachusetts, situated in the Executive Office of Energy and Environmental Affairs. It is best known for its parks and parkways. As of May 24, 2011 the Commissioner of the DCR is Edward M. Lambert, Jr. The DCR`s mission is "To protect, promote and enhance our common wealth of natural, cultural and recreational resources." The agency is the largest landowner in Massachusetts.