Pentagon Reservation.
Pentagon Reservation. Area of land and improvements thereon, located in Arlington, Virginia, on which the Pentagon Office Building, Federal Building Number 2, the Pentagon heating and sewage treatment plants, and other related facilities are located. Pursuant to 10 U.S.C. 674, the Pentagon Reservation also includes the area of land known as Raven Rock Mountain Complex (RRMC), located in Adams County, Pennsylvania, and Site C, which is located in Washington County, Maryland, and other related facilities. The Pentagon Reservation shall include all roadways, walkways, waterways, and all areas designated for the parking of vehicles.