Nowata County Oklahoma has 5 places on the National Register of Historic Places including 1 place of Statewide significance. Significant places include Opossum Creek Bridge, Cemetery Patent 110, Diamond Point Dependent District No. 44 School, Nowata County Courthouse and United States Post Office Nowata.
Some of the country's most noteable architects helped create the Nowata County places including Enoch W. McCormick, Woody Crumbo and Louis Simon. Prominent architectural styles found in Nowata Country are Art Deco, Bungalow/Craftsman and Late 19th And 20th Century Revivals.