2018 Most Endangered
- The Forum, Chicago
- James R. Thompson Center, Chicago
- Second Church of Christ, Scientist, Chicago
- Chautauquas & Tabernacles, Des Plaines, Freeport and Shelbyville (pictured)
- State Fairgrounds, Du Quoin and Springfield
- Varsity Theater Block, Evanston
- The Nite Spot Café, Fairmont City
- Central Congregational Church, Galesburg
- Early Settlement-era Buildings, Geneva
- Kincaid Mounds, Massac and Pope Counties
- Old Nichols Library, Naperville
- Rock Island County Courthouse, Rock Island County
- Stran-Steel House, Wilmette