Dunn County North Dakota has 3 places on the National Register of Historic Places including 2 places of Statewide significance. Significant places include Dunn County Courthouse and Hutmacher Farm, Dunn County Courthouse, Hutmacher Farm and Saints Peter and Paul Church.
Some of the country's most noteable architects helped create the Dunn County places including Valentine Hutmacher, Davis & Son, Arnt Ree, Frank Hutmacher and Nick Ressler. Prominent architectural styles found in Dunn Country are .