Illinois - Role: Building
| Bethalto Village Hall |
| B.F. Goodrich Company Showroom |
| Big Woods School |
| Biograph Theater Building |
| Bishop’s Busy Big Store-Lyric Opera House |
| Black Hawk Museum and Lodge |
| Blackman, George, House |
| Black's Store |
| Blackstone Hotel |
| Blair, William McCormick, Estate |
| Blanchard Hall |
| Bloomingdale School-Village Hall |
| Bloomington High School |
| Bloom Township High School |
| Bohlander, Jacob, House |
| Boult, H. P., House |
| Boyce Building |
| Bradley, B. Harley, House and Stable |
| Braeside School |
| Brainerd, Charles, House |
| Bressmer-Baker House |
| Bretz, John F., House and Warehouse |
| Brewer, May (Carns) and John E., House |
| Briggs, Alexander, House |
| Brigham, Edmund D., House |
| Brinkerhoff, George M., House |
| Bristol Congregational Church |
| Broadview Hotel |
| Brookner, Christopher, House |
| Brower, Adolphus W., House |
| Brown, Roger, Home and Studio |
| Brown Shoe Company Factory |
| Brown, William, Building |
| Bruce, James, Round Barn |
| Brunk Farmstead |
| Bryant, Francis E., House |
| Bryan, William Jennings, Boyhood Home |
| Buckingham Building |
| Buckles, Robert, Barn |
| Buffalo Township Public Library |
| Building at 1101-1113 Maple Avenue |
| Building at 1209-1217 Maple Avenue |
| Building at 1301-1303 Judson Avenue |
| Building at 1305-1307 Judson Avenue |
| Building at 1316 Maple Avenue |
| Building at 1401-1407 Elmwood Avenue |
| Building at 14-16 Pearson Street |
| Building at 1505-1509 Oak Avenue |
| Building at 1929-1931 Sherman Avenue |
| Building at 201 North Market Street |
| Building at 203-205 North Market Street |
| Building at 2440 N. Lakeview Avenue |
| Building at 2517 Central Street |
| Building at 2519 Central Street |
| Building at 2523 Central Street |
| Building at 257 East Delaware |
| Building at 320 West Oakdale Avenue |
| Building at 399 West Fullerton Parkway |
| Building at 417-419 Lee Street |
| Building at 548-606 Michigan Avenue |
| Building at 5510 North Sheridan |
| Building at 813-815 Forest Avenue |
| Building at 900 West Lake Street |
| Building at 923-925 Michigan Avenue |
| Building at 999 Michigan, 200 Lee |
| Buildings at 1104-1110 Seward |
| Buildings at 815-817 Brummel and 819-821 Brummel |
| Buildings at 860-880 Lake Shore Drive |
| Burgess-Osborne Memorial Auditorium |
| Burlingham Building |
| Burnham, Anita Willets, Log House |
| Burnham Athenaeum |
| Burns, Dr. William, House |
| Bush Temple of Music |
| Butler School |
| Caldwell Farmstead |
| Calhoun, Mr. James Kent, House |
| Calumet Plant, R. R. Donnelly & Sons Company |
| Cambre House and Farm |
| Campana Factory |
| Campbell, Albert, House |
| Camp Lincoln Commissary Building |
| Camp Mather-Camp Logan |
| Camptown Town Hall |
| Carling Hotel |
| Carlinville Chapter House |
| Carmi Chapter House |
| Carney, John, House |
| Carr House |
| Carroll County Courthouse |
| Carson, Pirie, Scott and Company |
| Carter, Frederick B., Jr., House |
| Carthage Jail |
| Castle Tower Apartments |
| Catlow Theatre |
| Cattle Bank |
| Central House |
| Central National Park Building |
| Central Park Theater |
| Cermak, Anton, House |
Data from United States Park Service and Wikidata
