All - Constructed - 1860–1869
| 75 Murray Street Building |
| Adairs Covered Bridge |
| Adaland |
| Adams-Edwards House |
| Adrian Union Hall-Croswell Opera House |
| African Cemetery |
| Ahnapee Brewery |
| Aigburth Vale |
| Alabama Insane Hospital |
| Aldrich Building |
| Aldrich-Genella House |
| Alexandria National Cemetery |
| Allamakee County Courthouse |
| Allan, Harold, Schoolhouse |
| Allen County Jail |
| All Saints Memorial Church |
| American Museum of Natural History |
| Amsterdam City Hall |
| Anderson Hall |
| Anderson House |
| Anderson, Niels Ole, House |
| Anderson-Smith House |
| Androscoggin Mill Block |
| Annisquam Bridge |
| Anshe Chesed Cemetery |
| Apostolic Bethlehem Temple Church |
| Arch Bridge from the Boonton Ironworks |
| Arlington Plantation House |
| Arlington Street Church |
| Armour's Warehouse |
| Armstrong County Courthouse and Jail |
| Ashcroft |
| Ashland |
| Ashpole Presbyterian Church |
| Ash Street School |
| Assumption of the Blessed Virgin Mary Parish Historic District |
| Assumption School |
| Astor House Hotel |
| Augusta Military Academy |
| Aurora Methodist Episcopal Church |
| Ayer, Albert, House |
| Babcock Block |
| Baca House and Outbuilding |
| Bailey-Estes House |
| Bailey, Jonathan, House |
| Baker, George Washington, House |
| Balboa Park |
| Baldwin, Benjamin Gordon, House |
| Bancroft, Wendell, House |
| Bangs, Benjamin, House |
| Bannack Historic District |
| Banning House |
| Barber-Scotia College |
| Barbour, Lucius, House |
| Barret House |
| Bassett, Maria, House |
| Battery Weed |
| Battleground National Cemetery |
| Bavarian Brewing Company |
| Baxter-King House |
| Beaverton Downtown Historic District |
| Beckwith House Hotel |
| Beecher Bible and Rifle Church |
| Beeches, The |
| Beechwood |
| Beir, Anna, House |
| Bell, George and Annie, House |
| Beni Israel Cemetery |
| Bennett, John W., House |
| B'er Chayim Temple |
| Berkley School |
| Berkshire Life Insurance Company Building |
| Berwick Manor and Orchard |
| Bethel A. M. E. Church |
| Bethel Church |
| Bethlehem Primitive Baptist Church and Cemetery |
| Beverly National Cemetery |
| Bickle, Jesse C., House |
| Bidwell Mansion |
| Big Creek Schoolhouse |
| Bigelow Street Historic District |
| Big Sable Point Light Station |
| Bingham Canyon Open Pit Copper Mine |
| Birdsall, Capt. Amos , House |
| Blaisdell, Augustus and Laura, House |
| Block Island North Light |
| Boardman House |
| Bobo Hotel |
| B & O Bridge |
| Bollman Suspension and Trussed Bridge |
| Boon Brick Store |
| Boone-Murphy House |
| Born, Engelbert B., House |
| Bouverans Plantation House |
| Bowen, Julia B. and Fred P., House |
| Boyden, John, House |
| Brannan, Sam, Cottage |
| Braswell-Carnes House |
| Braun, John, House |
| Braxton, Hiram, House |
Data from United States Park Service and Wikidata
