Iowa - Area of significance: Art
| Abraham Lincoln Statue and Park |
| Bethany Danish Evangelical Lutheran Church |
| Boyd, Byron and Ivan, House |
| Chief Black Hawk Statue |
| Christian Petersen Courtyard Sculptures, and Dairy Industry Building |
| Dibble House |
| Dodge, Ruth Anne, Memorial |
| Douglas, George B., House |
| "Grant Wood's ""Fall Plowing"" Rural Historic Landscape District" |
| Green, John A., Estate |
| Herschel-Spillman Two-Row Portable Menagerie Carousel |
| Hotel Ottumwa |
| Oakes-Wood House |
| Our Mother of Sorrows Grotto Historic District |
| Painter-Bernatz Mill |
| Sac City Monument Square Historic District |
| St. Luke's Methodist Episcopal Church |
| St. Mary's Catholic Church Historic District |
| Stone City Historic District |
| Wetherby, Isaac A., House |
| Woodbury County Courthouse |
Data from United States Park Service and Wikidata
