Cass County North Dakota (Historic Districts) has 9 places on the National Register of Historic Places including 1 place of National significance and 4 places of Statewide significance. Significant places include Casselton Commercial Historic District, Casselton Commercial Historic District, Downtown Fargo District, Fargo South Residential District and North Dakota State University District.
Some of the country's most noteable architects helped create the Cass County places including Walter & George Hancock, Paul W. Jones and Bassford & Co.. Prominent architectural styles found in Cass Country are Late 19th And 20th Century Revivals, Colonial Revival and Late Victorian.