Iron County Wisconsin has 5 places on the National Register of Historic Places including 1 place of National significance and 2 places of Statewide significance. Significant places include Montreal Company Location Historic District, Annala Round Barn and Plummer Mine Headframe, Old Iron County Courthouse and Springstead.
Some of the country's most noteable architects helped create the Iron County places including Albert D. Taylor, Matthew Annala, L.H. Ruggles and unknown. Prominent architectural styles found in Iron Country are Queen Anne and Tudor Revival.