Iowa - Architectural style - Neoclassical architecture
| Adams-Higgins House |
| Algona Junior and Senior High School Building and High School Building Annex |
| Ames High School |
| Antlers Hotel |
| Apperson-Iowa Motor Car Company Building |
| Bartlett, Walter M., Double House |
| Benson Block |
| Black Hawk County Soldiers Memorial Hall |
| Bloomfield Public Library |
| Bohemian Savings Bank |
| Building at 202 W. Third Street |
| Calhoun County Courthouse |
| Calmar Passenger Depot |
| Chariton City Hall and Fire Station |
| Chariton Free Public Library |
| Chariton Herald-Patriot Building |
| Clarinda Carnegie Library |
| Clay County Courthouse |
| Clemens Automobile Company Building |
| Clermont Public School |
| Collins House |
| Consistory Building No. 2 |
| Cottage Grove Avenue Presbyterian Church |
| Crescent Warehouse Historic District |
| Davenport Bank and Trust (Boundary Increase) |
| Dubuque Casket Company |
| Earle & LeBosquet Block |
| Eldon Carnegie Public Library |
| Ellsworth-Jones Building |
| Emerson School |
| Farmers Savings Bank |
| First Church of Christ, Scientist |
| First Church of Christ, Scientist |
| First Methodist Episcopal Church |
| First National Bank |
| First National Bank |
| First National Bank |
| First National Bank |
| First National Bank |
| Foster/Bell House |
| Franklin Hotel |
| Fuhrman, Mathias C. and Eva B. Crowell, Farm |
| Gallup, George H., House |
| Garner, J.W., Building |
| German Bank Building of Walnut, Iowa |
| Gibbs, E. H., House |
| Grace Methodist Episcopal Church |
| Greek Orthodox Church of Saint George |
| Grinnell Herald Building |
| Harrison County Courthouse |
| Hazen, Allen, Water Tower |
| Henry County Courthouse |
| Herring Motor Car Company Building |
| Hotel Charitone |
| Hotel Chieftain |
| Hotel Greenfield |
| Hotel Randolph |
| Howes Building |
| Hubbell Warehouse |
| Indianola Carnegie Library |
| I.O.O.F. Hall |
| Iowa Commission for the Blind Building |
| Iowa Soldiers' Orphans' Home |
| Iowa State Capitol |
| Jones, G.W., Building |
| Keerl-Decker House |
| Keokuk County Courthouse |
| Knoxville Veterans Administration Hospital Historic District |
| Koren Library |
| Ladora Savings Bank |
| Lake City Community Memorial Building |
| Lake City Public Library |
| Louisa Building |
| Maquoketa Free Public Library |
| Marion Carnegie Public Library |
| Marshall County Courthouse |
| Mason City Public Library |
| Masonic Temple |
| Masonic Temple Theater |
| McClung, J. J., House |
| McColl, Anthony M., House |
| Middleton, Dr. George McLelland, House and Garage |
| Municipal Building |
| Murillo Flats |
| National Biscuit Company Building |
| Noble-Kendall House |
| Northwest Davenport Savings Bank |
| Osborne, Edmund B., House |
| Ottumwa Public Library |
| Overland Waterloo Company Building |
| Peoples Nationals Bank |
| Pocahontas County Courthouse |
| Ringgold County Courthouse |
| Sauser-Lane House |
| Scottish Rite Consistory Building |
| Sokol Gymnasium |
| Spencer High School and Auditorium |
| Standard Glass and Paint Company Building |
| Sumner High School |
| Tipton State Bank |
Data from United States Park Service and Wikidata
