Maine - Constructed - 1850–1859
| Androscoggin County Courthouse and Jail |
| Aroostook County Courthouse and Jail |
| Badger, Samuel, Monument |
| Bass Harbor Head Light Station |
| Bates Mill Historic District |
| Blake House |
| Cottage on King's Row |
| Crooker, W. D., House |
| Dresden Town House |
| Ellis, Dr. J. W., House |
| Evergreen Cemetery |
| Fort Popham Memorial |
| Grindle Point Light Station |
| Hamilton, Thomas, House |
| Hemlock Bridge |
| Heron Neck Light Station |
| Hexagon Barn |
| Hichborn, Nathan G., House |
| Holmes, Dr. Job, House |
| Huston House |
| Indian Island Light Station |
| Jewett-Eastman House |
| Merritt, Captain, House |
| Mill Agent's House |
| Mill Cove School |
| Murch Family House |
| Narraguagus Light Station |
| Pettegrove, Joshua, House |
| Portland Breakwater Light |
| Prospect Harbor Light Station |
| Pumpkin Island Light Station |
| Rankin Block |
| St. John's Catholic Church |
| Stone Barn Farm |
| Stowe, Harriet Beecher, House |
| Tenants Harbor Light Station |
| Washington County Courthouse |
| Washington County Jail |
| Wilder, Benjamin C., House |
| Winter Harbor Light Station |
Data from United States Park Service and Wikidata
