Great Appalachian Valley

Power Plant and Dam No. 4 is a historic hydroelectric power generation station on the Potomac River, located near Shepherdstown on the county line between Berkeley and Jefferson County, West Virginia. The power plant is a tall one-story, limestone building on a high stone foundation. It is five bays long and has a gable roof. Dam 4 uses horizontal shaft turbines connected by rope drives to horizontal shaft generators. This plant is probably the last commercially operated rope-driven hydroelectric plant in the United States. The building is built into a hillside, so the main floor is the top floor. The power plant was originally built by the Martinsburg Electric Company.It was listed on the National Register of Historic Places in 1980.In 2013, the power plant was sold by FirstEnergy to Harbor Hydro Holdings LLC. The power plant has a rated capacity of 1.9 megawatts.

Jones Mill Run Historic District is a national historic district located near Martinsburg, Berkeley County, West Virginia. It encompasses one contributing building, one contributing site, and two contributing structures. They are the Thomas Swearingen House (c. 1760); site of the mill, including the stone foundation and head and tail races; and the double stone bridge. Thomas Swearingen House is a small limestone building in the Georgian style. Not only is it one of Berkeley County's oldest stone houses, but it has a unique fireplace that sits halfway out from the wall, rather than flat with the wall as with other stone houses in the county. It is the site of the first mill in West Virginia, built before 1734. When John Vanmeter received a King's Patent for the land in 1734 in what was then Virginia, the mill was already built. The nine-acre site is on Jones Mill Run, a tributary of the Potomac River.It was listed on the National Register of Historic Places in 1980.

The George Washington Hollida House is a brick house built c. 1842 near the village of Scrabble, West Virginia, United States. The Hollida (pronounced "Holiday") House is an example of an I-house with a five-bay front and a four-bay ell extending to the rear with Greek Revival detailing. The property includes several outbuildings and a bank barn. The Hollida house is included in the larger Scrabble Historic District, which encompasses the entire village.

Scrabble is an unincorporated community in Berkeley County, West Virginia, United States. According to the Geographic Names Information System, the community has been known as Hard Scrabble, Hard Scrabble Town, and Hardscrabble throughout its history. The community most likely was so named on account of treacherous local terrain.

The William Hagerman Farmstead is a historic home located at Sharpsburg, Washington County, Maryland, United States. The house is a 2+1⁄2-story five-bay brick dwelling with a raised cellar. It features a double porch, three tiered, extending across the east gable end of the house. The house is an exceptionally intact example of an 1860s vernacular interpretation of the Italianate architecture.The William Hagerman Farmstead was listed on the National Register of Historic Places in 2002.

Foltz is an extinct town in Berkeley County, in the U.S. state of West Virginia.

Woburn Manor is a historic home and farm located near Sharpsburg, Washington County, Maryland, United States. The manor house is a Federal style, 2+1⁄2-story stuccoed stone dwelling with a gable roof structure built around 1820. The stucco is incised to resemble cut block. The property includes a landscaped yard with terracing to the south, stone outbuildings including an out kitchen and smokehouse, and slave quarters.Woburn Manor was listed on the National Register of Historic Places in 2000.

Wild Goose Farm is a 173-acre (70 ha) farm complex near Shepherdstown, West Virginia, established in the early 19th century. The farm includes a large, irregularly-arranged main house, a Pennsylvania-style bank barn, a tenant house, and outbuildings including a spring house, smoke house, ice house, corn crib, water tower and a decorative pavilion.

Cedar Grove is a historic home located at Williamsport in Washington County, Maryland, United States. It is a two-story, four-bay brick-cased log dwelling with a central chimney built of stone and brick. The original part of the house was built about 1760, with later Federal-style additions. The house is likely one of the early tenement houses on Lord Baltimore's Conococheague Manor.It was listed on the National Register of Historic Places in 1999.

Swan Pond Manor Historic District is a national historic district located near Martinsburg, Berkeley County, West Virginia, U.S.A. It encompasses 21 contributing buildings, one site, and one structure, over 2,465 acres. The agricultural district boundaries reflect the Swan Pond Manor land of Thomas Fairfax, 6th Lord Fairfax of Cameron, which he set aside in 1747 as a part of his Northern Neck Territory for his personal use. Notable buildings include the Capt. James Mason House, Kroh-Sprinkle House (1819), Jacob A. Small House, Robert Carter Willis House, Dr. Williams House (a Greek Revival style house built c. 1840), "Hollidale," and "Wood Haven" (1895), Raleigh Morgan House. Also located in the district is the separately listed Swan Pond.It was listed on the National Register of Historic Places in 1980.

Boidstones Place, also called Greenbrakes and Fountain Rock, was built in 1766 by Thomas Boydston near Shepherdstown, West Virginia on land he was granted by Thomas Fairfax, 6th Lord Fairfax of Cameron. In a dispute with Fairfax and Joist Hite over lands he had acquired along the Terrapin Neck on the Potomac River, Boydston lost most of his lands, which were acquired by Abraham Shepherd. The property formed a portion of the Shepherd's holdings along Shepherd Grade, which were primarily devoted breeding race horses. Some of the property was annexed to the adjoining Wild Goose property, owned by R.D. Shepherd, who had a racetrack there. In 1851 R.D. Shepherd gave Boidstones to his nephew and namesake R. D. Shepherd, Jr. who built the main Greek Revival section of the house. The property was sold out of the Shepherd family in 1886, but was returned to the Shepherds in 1916 for use as a summer place. The original house at Boidstone Place is, with the Peter Burr House, the oldest framed building in West Virginia. The 1850s Greek Revival wing is also of wood-frame construction. Another addition was made in the 1920s, in the Colonial Revival style. Other structures on the farm include a log cabin (c. 1850), a log cottage (c. 1850s, altered in 1938), a tenant house (c. 1890), a springhouse (1850s), a garage (1920s), the main barn (c. 1850), a machine shed (c. 1910), a spray shed (c. 1920) and a bull shed (c. 1910) as well as a cemetery for slaves, active from c. 1776 to 1865. A large spring on the property became known as Stillhouse Spring, where Boydston produced whiskey which was shipped down the river from a dock.

Strode-Morrison-Tabler House and Farm is a historic home located near Hedgesville, Berkeley County, West Virginia. It is a farmhouse of brick, limestone, and wood construction that began in 1752 as a single-story, side-gable, two-bay cottage of rubble limestone that subsequently underwent several additions during the 19th century. These additions include a brick upper story added to the original house and a three-bay, limestone addition constructed about 1830. This limestone addition became the principal section of the house. A wood-frame addition was built along the rear of the house by the end of the 19th century. Also on the property are four sheds / outbuildings (c. 1920–1950), a garage (c. 1930), and barn complex (c. 1752 and later).It was listed on the National Register of Historic Places in 2006.