Iowa - Architectural style - Romanesque Revival architecture
| Adair County Courthouse |
| American Telephone & Telegraph Co. Bldg. |
| Anamosa Public Library |
| Berg, Henry, Building |
| Bicksler Block |
| Bishop's Block |
| Boston Block |
| Bowers and McDonald Office Building |
| Bricker-Price Block |
| Burlington, Cedar Rapids and Northern Railroad Passenger Station |
| Burlington, Cedar Rapids & Northern Passenger Depot-Dows |
| Calvary Baptist Church/First Baptist Church |
| Chapple and Young Block |
| Charles City College Hall |
| Chicago & Northwestern Passenger Depot and Baggage Room-Carroll |
| Chicago, Rock Island and Pacific Railroad Passenger Station |
| Chicago, Rock Island and Pacific Railroad-Wilton Depot |
| Chicago, Rock Island & Pacific Railroad Passenger Depot |
| Church of the Saviour Episcopal Church and David Henderson Statue |
| City Market |
| Clinton High School and Public Library |
| Corpus Christi Church |
| C.S.P.S. Hall |
| Davenport Crematorium |
| Delaware County Courthouse |
| Dubuque Star Brewery |
| Epworth School |
| Evans Block |
| Fairfield Public Library |
| Farm No. 1, Iowa Men's Reformatory |
| Fillmore Block |
| Fire Station No. 2 |
| First Congregational Church |
| Franklin County Courthouse |
| Franklin Hotel |
| Goodnow Hall |
| Grundy County Courthouse |
| Guttenberg State Bank |
| Hamilton Brothers Building |
| Hardin County Courthouse |
| Hibernia Hall |
| Holy Ghost Catholic Historic District |
| Homestead Building |
| Iowa County Courthouse |
| Jefferson County Courthouse |
| Keokuk Union Depot |
| Lucas County Courthouse |
| Mahaska County Courthouse |
| Marion County Courthouse |
| Masonic Opera House |
| Masonic Temple Building |
| Moeszinger-Marquis Hardware Co. |
| Monona County Courthouse |
| Monroe County Courthouse |
| Montgomery County Courthouse |
| Morrill Hall |
| Mount Pleasant Public Library |
| North Presbyterian Church |
| Onawa IOOF Opera House |
| Palmyra Methodist Episcopal Church |
| Peirce, John, House |
| Pella Opera House |
| Petersen's, J. H. C., Sons Store |
| Quasdorf Blacksmith and Wagon Shop |
| Redstone |
| Regina Coeli Monastery |
| "Reynolds, Joseph ""Diamond Jo,"" Office Building and House" |
| Sac County Courthouse |
| Saint John's Roman Catholic Church |
| Schmidt Block |
| Science Hall |
| Seth Richards Commercial Block |
| Simmons Hardware Company Warehouse |
| Sioux County Courthouse |
| St. Ambrose Cathedral and Rectory |
| State Quarry, Iowa Men's Reformatory |
| State Savings Bank |
| Stewart Library |
| St. Mary's Academy |
| St. Mary's Roman Catholic Church Complex |
| St. Michael's Church, Cemetery, Rectory and Ancient Order of Hibernians Hall |
| St. Patrick's Catholic Church, Cedar |
| St. Thomas Episcopal Church |
| Tama County Courthouse |
| Taylor County Courthouse |
| Villisca National Guard Armory |
| Warren Opera House Block and Hetherington Block |
| Washington County Courthouse |
| Weins Commercial Building |
| Winnebago County Courthouse |
| Woodbine Savings Bank |
| Worth County Courthouse |
| Zwemer Hall, Northwestern College |
Data from United States Park Service and Wikidata
