Massachusetts - Area of significance: Architecture
| Anthony, David M., House |
| Anthony, David M., House |
| Anthony, Harold H., House |
| Anthony House |
| Apponegansett Meeting House |
| Apremont Triangle Historic District |
| Arcade Building |
| Arcade, The |
| Arden |
| Arlington-Basswood Historic District |
| Arlington Center Historic District |
| Arlington Coal & Lumber |
| Arlington Gaslight Company |
| Arlington Mills Historic District |
| Arlington Pumping Station |
| Arlington Reservoir |
| Arlington Street Church |
| Armory Block |
| Armory of the First Corps of Cadets |
| Armsby Block |
| Armstrong House |
| Asbury Grove Historic District |
| Ascension-Caproni Historic District |
| Ashburnham Center Historic District |
| Ashfield Plain Historic District |
| Ashland Mill Tenement |
| Ashland Town House |
| Ashley, Col. John, House |
| Ashley House |
| Ash Street Historic District |
| Ash Street School |
| Ashworth and Jones Factory |
| Assington |
| Assonet Historic District |
| Athenaeum Press |
| Athol High School |
| Attleboro Jewelry Industry Historic District |
| Attleborough Falls Gasholder Building |
| Attleborough Falls Historic District |
| Atwood, Charles R., House |
| Atwood, Ephraim, House |
| Atwood-Higgins Historic District |
| Atwood, Thomas, House |
| Auburndale Congregational Church |
| Aurora Hotel |
| Austin, Francis B., House |
| Austin Hall |
| Avant House |
| Avon Hill Historic District |
| Ayer, Albert, House |
| Ayer Main Street Historic District |
| Ayer, Thomas, House |
| Babcock Block |
| Babson-Alling House |
| Back Bay Historic District |
| Bacon, Clifton, House |
| Bacon-Gleason-Blodgett Homestead |
| Bacon-Morse Historic District |
| Bacon, Robert, House |
| Bacon, Stephen, House |
| Badger, Rev. Stephen, House |
| Bailey House |
| Bailey, Timothy P., House |
| Bainbridge, Randolph, House |
| Baird House |
| Baker, Benjamin, Jr., House |
| Baker, Capt. Seth, Jr., House |
| Baker, Charles, House |
| Baker, Charles, Property |
| Baker Congregational Church |
| Baker House |
| Baker, Kenelum, House |
| Baker, Nathaniel, House |
| Baker, Peter, Three-Decker |
| Baker, Sarah J., School |
| Balch, John, House |
| Baldwin, Loammi, Mansion |
| Baldwinville Village Historic District |
| Ballardvale District |
| Bancroft Hotel |
| Bancroft, Joseph, House |
| Bancroft Memorial Library |
| Bancroft, Samuel, House |
| Bancroft Tower |
| Bancroft, Wendell, House |
| B and B Chemical Company |
| Bangs Block |
| Bank Building |
| Banks, E. Sybbill, House |
| Bannister, Emory, House |
| Baptist Society Meeting House |
| Barker, George A., House |
| Barker, Henry F., House |
| Barker, Richard, Octagon House |
| Barker, Stephen, House |
| Bark Street School |
| Barlin Acres |
| Barnard Block |
| Barnard Mills |
| Barnard, Parson, House |
Data from United States Park Service and Wikidata
