Illinois - Role: Site
| Albany Mounds Site |
| Alton Military Prison Site |
| Alton National Cemetery |
| Ambler's Texaco Gas Station |
| Apple River Fort Site |
| Bane, Warren, Site |
| Battery Rock |
| Beattie Park Mound Group |
| Bieker-Wilson Village Site |
| Bowen, Joseph T., Country Club |
| Bridges, John, Tavern and Store Site |
| Briscoe Mounds |
| Cahokia Mounds |
| Camp Butler National Cemetery |
| Campground Church and Cemetery Site |
| Cave-In-Rock |
| Chapman, John, Village Site |
| Chicago Portage National Historic Site |
| Civilian Conservation Corps Camp Shiloh Encampment Site |
| Clear Lake Site |
| Cleiman Mound and Village Site |
| Collins Archeological District |
| Corbin, Dr. Joseph Carter, Gravesite |
| Corbin Farm Site |
| Dickson Mounds |
| Dogtooth Bend Mounds and Village Site |
| Duffy Site |
| Duncan Farm |
| Du Sable, Jean Baptiste Point, Homesite |
| Emerald Mound and Village Site |
| Evelyn Site |
| Farm Creek Section |
| First Self-Sustaining Nuclear Reaction, Site of |
| Fort de Chartres |
| Fort Massac Site |
| Giant City Stone Fort Site |
| Golden Eagle-Toppmeyer Site |
| Grand Tower Mining, Manufacturing and Transportation Company Site |
| Hofmann Tower |
| Horseshoe Lake Mound and Village Site |
| Hotel Plaza Site |
| Hubele Mounds and Village Site |
| Hunziker Winery Site |
| Kamp Mound Site |
| Kellogg's Grove |
| Kincaid Site |
| Kolmer Site |
| Koster Site |
| Kuhn Station Site |
| Larson Site |
| Lilacia Park Historic District |
| Lincoln, Abraham, Memorial Garden |
| Little Beaver Site |
| Lunsford-Pulcher Archeological Site |
| Marshall, John, House Site |
| Marshall Site |
| Mayberry Mound and Village Site |
| Mazon Creek Fossil Beds |
| McCune Mound and Village Site |
| McWorter, Free Frank, Grave Site |
| Millstone Bluff |
| Millville Town Site |
| Mitchell Archeological Site |
| Modoc Rock Shelter |
| Morrow Plots, University of Illinois |
| Mound City National Cemetery |
| Mound House Site |
| Naples Mound 8 |
| New Philadelphia Town Site |
| Nutwood Site |
| Oak Hill Cemetery |
| Ogden-Fettie Site |
| Old Kaskaskia Village |
| Orendorf Site |
| Orr-Herl Mound and Village Site |
| Piney Creek Site |
| Piney Creek South Site |
| Piney Creek West Site |
| Quincy National Cemetery |
| Riverton Site |
| Rock Island National Cemetery |
| Rockwell Mound |
| Rosewood Park |
| Roy, John, Site |
| Saline Springs |
| Schudel No. 2 Site |
| Shakespeare Garden |
| Shaky Shelter Site |
| Sheets Site |
| Sinnissippi Site |
| Sleeth Site |
| Starved Rock |
| Stillman's Run Battle Site |
| St. James Catholic Church and Cemetery |
| Stoner Site |
| Swan Island Site |
| Sylvan Road Bridge |
| Tampico Mounds |
| Tegtmeyer Site |
| Thompson Brothers Rock Art |
Data from United States Park Service and Wikidata
