Maine - Area of significance: Exploration/Settlement
| Acadian Historic Buildings |
| Acadian Landing Site |
| Allen's Island |
| Austin-Hennessey Homestead |
| Big Black Site |
| BOWDOIN (schooner) |
| Bradford Farm Historic District |
| Bray House |
| Brick House Historic District |
| Briggs, William, Homestead |
| Brown House |
| Burnham Tavern |
| Burton, Benjamin, Garrison Site |
| Castine Historic District |
| Chapman-Hall House |
| Charlotte Pound |
| Chase, Squire, House |
| Clarke and Lake Company Archeological Site |
| Clark, Edmund and Rachel, Homestead |
| Colburn House State Historic Site |
| Colburn, William, House |
| Conway House |
| Crosby Street Historic District |
| Damariscove Island Archeological Site |
| Deacon Hutchins House |
| Dorfield Farm |
| Eagle Island |
| Early Post Office |
| Eaton House |
| Emery Homestead |
| Emery House |
| First Congregational Church and Parsonage |
| Fisherman's Island |
| Fort Kent |
| German Church and Cemetery |
| Goddard Site |
| Goodale-Bourne Farm |
| Goodale-Stevens Farm |
| Gray House, Old |
| Greenwood Cattle Pound |
| Harrington Meetinghouse |
| Hatch House |
| Higgins Barn |
| Holden, Samuel, House |
| Hunniwell, Richard, House |
| Influence, The |
| Islesford Historical Museum and Blue Ducks Ships Store |
| Jacobson, Pehr J., House |
| Jefferson Cattle Pound |
| King, Thomas, Inscription |
| Little, Edward, House |
| Littlefield-Chase Farmstead |
| Littlefield-Dustin Farm |
| Littlefield Homestead |
| Littlefield-Keeping House |
| Littlefield Tavern |
| Lord Farm |
| Ludwig, Godfrey, House |
| Maine Archeological Survey site 62.46 |
| Manor House |
| Mansion House, The |
| McCobb-Hill-Minott House |
| Mill House |
| Moore, John, House |
| Mosquito Island House |
| Nahanada Village Site |
| Olsson, Anders and Johanna, Farm |
| Otisfield Town Pound |
| Paine Neighborhood Historic District |
| Parsons, Josiah K., Homestead |
| Pemaquid Restoration and Museum |
| Perkins, Charles, House |
| Perley, Sam, Farm |
| Peters, John, House |
| Philler Cottage |
| Pond Island Archeological District |
| Powers House |
| Pownal Cattle Pound |
| Putnam, Blackhawk, Tavern |
| Randall, Jacob, House |
| Rendezvous Point Burying Ground |
| Richmond's Island Archeological Site |
| Robinson-Parsons Farm |
| Sheepscot Historic District |
| Smith, James, Homestead |
| Snipe Farm |
| Sodergren, John J. and Martha, Homestead |
| Somesville Historic District |
| Sproul Homestead |
| St. Croix Island International Historic Site |
| St. John's Anglican Church and Parsonage Site |
| Thompson's Bridge |
| Timmerhuset |
| Todd House |
| Tolman Cemetery |
| Tufts House |
| Turner Cattle Pound |
| Ulmer, George, House |
| Valley Lodge |
| Watson, John, House |
Data from United States Park Service and Wikidata
