The Canadian Pacific Railway Depot, Greenville Junction, Maine is a well preserved example of a type of railroad building that was once common in Maine. Erected in 1889 by Canadian Pacific Railway (CPR), the Queen Anne style depot is located alongside the tracks of the CPR which is now owned and operated by Central Maine and Quebec Railroad. This depot once served as a junction between the Bangor and Piscataquis Railroad (B&P) and the CPR.

The Rumford Commercial Historic District located in the town of Rumford, Oxford County, Maine, is significant under National Register Criterion C in the areas of Community Planning and Development and Architecture. It is one of the few planned company towns in Maine. The Rumford Commercial Historic District is also significant under National Register Criterion A in the area of Commerce.

The St. Joseph's Convent (a.k.a. Motherhouse) and adjoining St. Joseph's Academy are located at 605 Stevens Avenue in Portland, Maine (Cumberland County), near the geographic center of the city and possess integrity of location, design, setting, materials, workmanship, feeling and association. The buildings are locally significant under National Register Criterion A in the areas of Education and Social History and under Criterion C in the area of Architecture. The period of significance runs from 1862, when the St.

The Water Street Historic District located in the City of Augusta, Kennebec County, Maine, is significant under National Register Criterion A in the areas of Commerce, Industry, Transportation and Entertainment and Recreation. As the most intact remaining section of the historical dense commercial downtown in Augusta, the district illustrates a common pattern of retail and commercial uses in first floor spaces with office, fraternal, hotel, or residential spaces above, and was a hub for the citys entertainment and recreational facilities.

The Wallace/Haskell homestead is eligible under Criterion B as the home of prominent American artist Ernest Haskell from 1906 to his death in 1925. Haskell began his career in New York as an illustrator, later studied in Paris, and finally worked in Maine during his mature period as an important American artist specializing in etching. Mr. Haskell created some of his best work at the homestead including many etchings focused on the local Maine landscape. After Earnest Haskell's death his wife continued living on the property and ran the Haskell Camp in Maine for children from 1927 to 1938.

The Freeman barn in rural Wallagrass, Aroostook County, Maine is a Gothic arched bank barn facing east on Route 11 and overlooking the Fish River. The 49 x 73 barn sits on a 4.4 acre lot with hay fields of the original farm to the west. The barn sits at the edge of the abrupt transition from cleared farm land along Route 11 to thick forest to the west. Wallagrass is on the edge of the larger Aroostook County potato production areas. The Freeman barn is an example of an innovative barn architecture that is becoming rare nationwide and particularly in northern Maine.

The Charles and Louise Parsons Ewing estate, commonly known as "Timber Point," is significant under National Register Criterion C as it embodies the distinctive characteristics of its type and period, illustrating an impressive interpretation of the Maine coastal summer estate which not only combined contemporary trends but the personal taste of the designer, owner, and master architect, Charles Ewing and approached with an eye of a practicing artist with an appreciation of European and American traditions.

The Waterville Main Street Historic District (Boundary Increase) located in the City of Waterville, Kennebec County, Maine, contains six contributing and four non-contributing buildings and abuts the northern end of the existing Waterville Main Street Historic District. The buildings in the Boundary Increase were not included in the Waterville Main Street Historic District nomination in 2013 because of a lack of historic integrity for six of the ten buildings.

The Robinhood Free Meetinghouse in rural Georgetown, Sadagahoc County, Maine is a two-story gable front Greek Revival building facing Robinhood Road to the south with Webber Road running north along the buildings west side. The building sits on a 0.57 acre lot on a forested rise of Georgetown Island approximately one half mile above the nearest cluster of buildings at Robinhood Cove, the nearest and only village on the island being Georgetown four miles south.

The Elizabeth Ann Seton Hospital in Waterville, Maine is significant at the state level for architecture as a good example of the Miesian school of Modernist architecture, applied to a health care facility in Maine. Seton Hospital was designed by the architectural firm of James H. Ritchie & Associates in 1963 and completed in 1965. Scattered examples of International Style buildings, and its variants, began to appear in Maine in the 1940s, following World War II but most of these were residential rather than public or commercial.