The Maryland-National Capital Park and Planning Commission was created by the Maryland General Assembly in 1927 to protect open space and control development in parts of Maryland s regional suburbs. The commission acquires land to implement plans for parks, determine the location of highways, exercise subdivisional control and implement zoning regulations. Its responsibilities include acquisition, development, maintenance and management of the park system within two counties. The Maryland-National Capital Park and Planning Commission has 10 commissioners who are appointed Montgomery and Prince George s counties in Maryland. The commission maintains more than 400 regional, recreational and stream valley parks, as well as neighborhood conservation areas and historical and cultural sites. The Maryland-National Capital Park and Planning Commission maintains an office in Silver Spring, Md.