Massachusetts - Area of significance: Architecture
| Building at 600 Main Street |
| Building at 606 Main Street |
| Building at 614 Main Street |
| Building at 8-22 Graves Avenue |
| Buildings at 110-112 Inman St. |
| Buildings at 15-17 Lee St. |
| Buildings at 24-30 Summer St. |
| Buildings at 35-37 Richardson Avenue |
| Buildings at 80 and 88 W. Brittania St. |
| Buildings at 825-829 Blue Hill Avenue |
| Bulfinch Triangle Historic District |
| Bullard Farm |
| Bullard House |
| Bullard, Isaac, House |
| Bullen-Stratton-Cozzen House |
| Bunker Hill School |
| Burbach Block |
| Burgess, Charles H., House |
| Burgess, Frank, House |
| Burgess, Thornton W., House |
| Burgin, Clarence, House |
| Burnham, David, House |
| Burnham, James, House |
| Burnham-Patch House |
| Burt, Elijah, House |
| Buswell, Clara, House |
| Buswell, J.E., House |
| Butler Block |
| Butler Flats Light Station |
| Butler School |
| Butters-Avery House |
| Buttonwood Park Historic District |
| Buttrick, Francis, House |
| Buttrick, Francis, Library |
| Byam, Charles, House |
| Cable, Benjamin Stickney, Memorial Hospital |
| Cabot, Capt. John, House |
| Cabot, Lewis, Estate |
| Cabotville Common Historic District |
| Cadman-White-Handy House |
| Caldwell Block |
| Caledonia Building |
| Calef, Dr. John, House |
| Calf Pasture Pumping Station Complex |
| Calhoun, Apartments, The |
| Call-Bartlett House |
| Calvary Methodist Church |
| Calvinistic Congregational Church |
| Cambidge Common Historic District Amendment |
| Cambridge Common Historic District |
| Cambridge Grant Historic District |
| Cambridge Home for the Aged and Infirm |
| Cambridge Public Library |
| Cambridge Street Firehouse |
| Cambridge Street School |
| Camden Street Development Historic District |
| Campbell, Collen C., House |
| Camp Kiwanee Historic District |
| Canary-Hartnett House |
| Candler Cottage |
| Canedy, Squire William B., House |
| Canton Corner Historic District |
| Canton Viaduct |
| Capen, Parson, House |
| Cape Poge Light |
| Capitol Diner |
| Capitol Theater Building |
| Capron, Charles, House |
| Capron, George, House |
| Capron House |
| Captain R. B. Forbes House |
| Cardinal Cushing Center Historic District |
| Carlson, Eric, Three-Decker |
| Carlton-Frie-Tucker House |
| Carlton House Block |
| Carpenter Center for the Visual Arts |
| Carpenter, Christopher, House |
| Carpenter, Col. Thomas, III, House |
| Carpenter, Ezra, House |
| Carpenter, George, House |
| Carpenter Homestead |
| Carpenter House |
| Carreau Block |
| Carr-Jeeves House |
| Carr, Martin W., School |
| Carroll-Hartshorn House |
| Carter Mansion |
| Cartoof & Sherman Apartments |
| Caryl, Benjamin, House |
| Cary, Otis, House |
| Case's Corner Historic District |
| Casey's Diner |
| Castle Hill |
| Castle Street Row |
| Castle, The |
| Cataract Engine Company No. 3 |
| Cataumet Schoolhouse |
| Cathedral of St. George Historic District |
| Cathedral of St. Paul |
| Center Depot |
Data from United States Park Service and Wikidata
