Bergen County New Jersey (Vacant / Not In Use) has 9 places on the National Register of Historic Places including 3 places of National significance and 3 places of Statewide significance. Significant places include Hopper Gristmill Site, New Milford Plant of the Hackensack Water Company, Reaction Motors Rocket Test Facility, Alcoa Edgewater Works and Civil War Drill Hall and Armory.
Some of the country's most noteable architects helped create the Bergen County places including Charles Benjamin Brush, Myles Tierney, Turner Construction Co., Edwin Stanton Fickes and Albert Kahn. Prominent architectural styles found in Bergen Country are Bungalow/Craftsman, Colonial and Federal.