The First Baptist Church is an early nineteenth-century building that exhibits Greek Revival-style features resulting from extensive remodeling in 1849. The house of worship is a two-story rectangular wooden framed building sitting on a granite slab and sheathed in weatherboards. It features a gable-front pediment, corner pilasters, and broad entablatures above the pair of widely spaced front doors. The doors are flanked by wide pilasters and multi-light transoms and topped with broad entablatures. The windows are double-hung sash with many small panes of glass with functional shutters.

Located in the Acadian Village on Route 1 in Van Buren, the Roy House was originally located in Hamlin, Maine, and moved to its current location after 1977. The log house features piece-on-piece (or pice sur pice) construction with hand-hewed or squared timber stacked together and held at the corners in the "stacked and pegged" style. This method of construction was popular with French Canadian settlers, but the University Maine at Fort Kent notes this configuration had not been physically documented previously.

The Dennysville Historic District is primarily a grouping of nineteenth-century buildings, mostly residences, but includes a church, library, former academy (now museum), legion hall, and former inn. The district runs along the western shore of the Dennys River roughly two miles north of the Dennys Bay. Located in a remote part of the state, Dennysville was founded soon after the American Revolution. Early settlement was difficult, but with plentiful timber and close proximity to the river, the lumber industry began to thrive.

The Lovell Meeting House was built as the town hall and as a religious meeting place. The building was originally two stories tall, with gallery space on the second level. The symmetrical facade faces south with the entry door in the center. The building has a large window in the center of the west (street facing) elevation with a king truss (likely not an original element) in front of a carved wooden panel in the gable peak. There is simple wood-block quoining at the corners. Currently, it is a single-story wood-frame structure with a side gabled roof and clapboard siding.

Located on Lermond Pond, the Lermond Mill is comprised of two buildings. Both are timber framed with gabled roofs and wood shingle siding. The building constructed in 1803 is one-and-a-half stories. The second section was built in 1825 and is two stories. Both structures are joined by a small one-story shed with a gable roof and shingle siding. John Lermond came to Union in 1795 and built the dam that created Lermond Pond which powered a pit saw mill. By 1803 the present mill was constructed to serve as a grist mill.

Originally constructed in 1816 and remodeled in c.1825 and 1857, the Middle Intervale Meeting House is a wood-frame Greek Revival-style building. It sits at the northeast corner of the Town Common, an open area of about five acres originally set aside as a public training ground for the local militia. Sheathed in clapboards, the building is gable fronted with a square tower located just behind the gable peak. The symmetrical facade contains two entry doors, each framed by wooden pilasters supporting an entablature.

The Limerick Upper Village Historic District consists of twenty-eight properties including three constructed prior to statehood. Composed of the Upper Village located on top of a high ridge where a gap contains roughly 200 acres of flat land. The district mostly sits on Main Street and includes numerous businesses, residences, three churches, a former academy, library, town hall, multiple cemeteries, band stand, park, and a memorial marker. All three houses built before 1820 are multi-storied Federal-style houses with clapboard exteriors and known as the Rev. Edmund Eastman House (c.

Few of Maine's early schoolhouses still in existence hold so similarly to their original exterior design as the Alna School (also known as the Center School), located in Alna Center about a half-mile south of the Alna Meeting House (which is also listed in the National Register of Historic Places). It is believed to be the second-oldest schoolhouse still standing in Maine; the Old Schoolhouse in York predates it by 40 years. The Alna Schoolhouse is a one-story, nearly square building that maintained its educational function into the twentieth century.

The Belfast Historic District encompasses a large area of the city center and includes a variety of residential, commercial, religious, and governmental buildings. There are 287 properties listed in the district, and many of them were constructed before 1900. The district includes buildings on eighteen different streets. Various architectural styles were employed by its citizens including Federal, Greek Revival, Gothic Revival, Italianate, Queen Anne, and Renaissance Revival designs. Belfast was first settled in the late-eighteenth century.

The Holmes-Craft Homestead sits on a hill north of Jay proper at the fork of Route 17 and Old Jay Road. Original owner and early settler, John Starr was a representative to the Massachusetts General Court, first elected in 1804. Starr was a jack-of-all trades, working as a lawyer, judge, accomplished land surveyor, owner of a tavern with a stagecoach stop in the village, and postmaster. Later, Starr's son-in-law and talented cabinet maker, Aruna Holmes, purchased the property. The timber-framed Federal-style house is two stories high with a hipped roof.