All - Constructed - 1850–1859
| Bevier-Wright House |
| Bevington, C. D. and Eliza Heath, Privy |
| Big Mill Homestead |
| Billings-Hougaard House |
| Biloxi Garden Center |
| Bingham, Judge John A., House |
| Bintliff, Gen. James, House |
| Bird-in-Hand Hotel |
| Bird's Nest |
| Birmingham-Southern College |
| Bishop, James, House |
| Black River Presbyterian and Ivanhoe Baptist Churches |
| Blake House |
| Blank, Stephen and Parthena M., House |
| Bloomfield Academy Site |
| Blumer, Dr. Samuel, House |
| Bolles, Erastus, House |
| Bonin House |
| Borden-Pond House |
| Borst, Joseph, House |
| Bostick, William, House |
| Bottume, John, House |
| Boughner, Alexander V., House |
| Boutwell, Gov. George S., House |
| Bowen, James B., House |
| Box Elder County Courthouse |
| Boxwood |
| Brackett, Edward A., House |
| Branner-Hicks House |
| Braska House |
| Brecknock Hall |
| Brewster, Walter, House |
| Bringhurst, William and Ann, House |
| Bristol Ferry Lighthouse |
| Brock Hill Schoolhouse |
| Brown-Daly-Horne House |
| Browne, Mary Ann, House |
| Brown, John, Cabin |
| Brown-Maynard House |
| Brown, William H., House |
| Brumby, Arnoldus, House |
| Brunson, Benjamin, House |
| Bryant, James and Anne Atmore, Farmstead |
| Bryant, William, Octagon House |
| Bryan, William Jennings, Boyhood Home |
| Buchanan Road stone-arch bridge over a tributary of Alexauken Creek |
| Buena Vista Vineyards-Buena Vista Vinicultural Society |
| Buffalo Seminary |
| Buie House |
| Building at 259 Mount Auburn Street |
| Burns, Dr. William, House |
| Butler Block |
| Butterworth, Nathaniel, House |
| Buttrick, Francis, House |
| Bybee House |
| Cabin John Aqueduct |
| Cades Mill Covered Bridge |
| Cadillac House |
| Caldwell, James, House |
| Call-Bartlett House |
| Camden |
| Campbell-Rumsey House |
| Camp Harlan-Camp McKean Historic District |
| Candler Cottage |
| Canemount |
| Cannonball House |
| Cape Lookout Light Station |
| Captain Adams House |
| Carmel Presbyterian Church |
| Carpenter, Capt. Nathan, House |
| Carr High School |
| Carrolton Covered Bridge |
| Cartecay Methodist Church and Cemetery |
| Carter-Simmons House |
| Cary Building |
| Casa Alcaldia de Vieques |
| Cates, John F., House |
| Cathedral of the Assumption |
| Cathedral of the Immaculate Conception |
| C. Burton Hotel |
| Cedar Bend Plantation |
| Cedarburg Mill |
| Cedarcroft |
| Center School |
| Central High School |
| Central Methodist College Campus Historic District |
| Central Park |
| Chain Bridge |
| Chalmers Institute |
| Chapel of the Centurion |
| Chapel of the Cross |
| Chapman, A. H., House |
| Charity's House |
| Chateau-sur-Mer |
| Cheairs, Martin, House |
| Chene, Alexander, House |
| Cheney, Andrew J., House |
| Cherry Hill |
| China Grove Plantation |
| Chippiannock Cemetery |
Data from United States Park Service and Wikidata
