Belknap County New Hampshire (Historic Districts) has 6 places on the National Register of Historic Places including 3 places of Statewide significance. Significant places include Lochmere Archeological District, New Hampshire Veterans' Association Historic District and Sanbornton Square Historic District, Centre Harbor Village Historic District and Monument Square Historic District.
Prehistoric cultural affiliation(s) include Archaic, Woodland, American, Paleo-Indian and Early Archaic dating back to 8999 BC. Prominent architectural styles found in Belknap Country are Greek Revival, Late Victorian and Classical Revival.