Fergus County Montana (Historic Districts) has 14 places on the National Register of Historic Places including 5 places of Statewide significance. Significant places include Judith Landing Historic District (Boundary Increase), Lewistown Satellite Airfield Historic District, Lewistown Satellite Airfield Historic District (Boundary Increase II), Lewistown Satellite Airfield Historic District (Boundary Increase IV) and Lewistown Satellite Airfield Historic District (Boundary Increase).
The famous person Harry T. Kendall is associated with one of more of the Fergus County historic places.
Some of the country's most noteable architects helped create the Fergus County places including Howard R. Co. Green, Howard R. Green, Gus Nelson, Floyd Naylor, Peter Tus, William S. Devine, George Ligatich and Axel Johnson. Prominent architectural styles found in Fergus Country are Late Victorian, Late 19th And 20th Century Revivals and Bungalow/Craftsman.