Coos County New Hampshire (Historic Districts) has 5 places on the National Register of Historic Places including 2 places of Statewide significance. Significant places include Mountain View House and Waumbek Cottages Historic District, Balsams, The, Martin Homestead.
Some of the country's most noteable architects helped create the Coos County places including Joseph Austin Martin. Prominent architectural styles found in Coos Country are Bungalow/Craftsman, Colonial and Colonial Revival.