Indiana - Significance region: State
| Adams Mill |
| Adams, Ora, House |
| Ashworth Archaeological Site (12 Po 7) |
| Athenaeum (Das Deutsche Haus) |
| Bailey, Louis J., Branch Library-Gary International Institute |
| Bartholomew County Courthouse |
| Battle Ground Historic District |
| Beechwood (Isaac Kinsey House) |
| Beiger House |
| Benton House |
| Black, Glenn A., House |
| Bonneyville Mills |
| Bono Archaeological Site (12 Lr 194) |
| Boone County Courthouse |
| Bozeman-Waters National Bank |
| Brady Street Historic District |
| Brendonwood Historic District |
| Bridge Street Bridge |
| Brown County State Park |
| Burris House and Potawatomi Spring |
| Cairo Skywatch Tower |
| Camp Edwin F. Glenn |
| Canal House |
| Castor Farm Site |
| Cataract Covered Bridge |
| CCC Recreation Building-Nature Museum |
| Cedar Grove Bridge |
| Central Library (Indianapolis-Marion County Public Library) |
| Ceylon Covered Bridge |
| Christ Church Cathedral |
| Clinton County Courthouse |
| Cockrum, William M., House |
| Colter, Ben, Polygonal Barn |
| Columbus Historic District |
| Combination Shelter |
| Condit House |
| Conklin-Montgomery House |
| Conner, William, House |
| Convent Immaculate Conception Historic District |
| Corydon Battle Site |
| County Bridge #45 |
| Culbertson Mansion |
| Culver Union Hospital |
| Cumberland Covered Bridge |
| Darlington Covered Bridge |
| Decatur County Courthouse |
| Delphi Lime Kilns |
| Dresser, Paul, Birthplace |
| Durbin Hotel |
| East College of DePauw University |
| Eggleston, Edward and George Cary, House |
| Eikenberry Bridge |
| Eleutherian College |
| Elmhurst |
| Embassy Theater and Indiana Hotel |
| Ennis Archaeological Site (12 OW 229) |
| Enoco Coal Mine |
| Epple, Ludwig, House |
| Eugene Covered Bridge |
| Farington's Grove Historic District |
| Farnsley, Gabriel, House |
| First Baptist Church |
| Fisher, William, Polygonal Barn |
| Floral Hall |
| Forsythe Covered Bridge |
| Fort Knox II Site |
| Fort Ouiatenon |
| Fort Wayne City Hall |
| Fort Wayne Street Bridge |
| Fountain County Courthouse |
| Fowler, Moses, House |
| Fox Lake |
| Franklin College Library (Shirk Hall) |
| Franklin College-Old Main |
| Franklin County Seminary |
| French Lick Springs Hotel |
| Fudge Site |
| Fulton County Courthouse |
| Gaar, Abram, House and Farm |
| Gaseteria, Inc. |
| George Street Bridge |
| Glendale River Archaeological Site (12 Da 86) |
| Godfroy, Francis, Cemetery |
| Gramelspacher-Gutzweiler House |
| Grassyfork Fisheries Farm No. 1 |
| Griffin, Cornish, Round Barn |
| Grisamore House |
| Haimbaugh, John, Round Barn |
| Hall-Crull Octagonal House |
| Harmony Way Bridge |
| Haynes, Elwood, House |
| Haynes, John and Dorothy, House |
| Helfrich, Michael D., House |
| Heritage Hall |
| Hermitage, The |
| Hicklin House and Settlement |
| Hicksite Friends Meetinghouse (Wayne County Museum) |
| Hill, William, Polygonal Barn |
| Hollingsworth House |
| Hovey Lake Archaeological District |
Data from United States Park Service and Wikidata
