Power Plant and Dam No. 4

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 Great Appalachian Valley, also called The Great Valley or Great Valley Region, is one of the major landform features of eastern North America. It is a gigantic trough, including a chain of valley lowlands, and the central feature of the Appalachian Mountains system. The trough stretches about 1,200 miles (1,900 km) from Quebec in the north to Alabama in the south and has been an important north–south route of travel since prehistoric times.

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 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.

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.

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.

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.

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.

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

The James Marshall House, also known as Marshall Hall, Marshall-Myers-Byron House and Windward is a property near Shepherdstown, West Virginia. The house was built circa 1835 by James Marshall and was known as "Marshall Hall" until about 1914. It became known as "Windward" in 1966. Windward is a two-story L-shaped house in with Greek Revival elements. The brick structure features a small one story Greek Revival pedimented porch on a relatively plain facade. The flush cornices and simplified detailing are characteristic of an understated application of the Greek Revival style. The slate roof is a clipped hip form that follows the L shape of the plan.The interior features Greek Revival detailing with plain surfaces. The center hall plan features a large parlor to the left of the hall, with a small parlor and library to the right. A kitchen and dining room are located in the rear extension, with a galleried porch aligning with the center hall. Three bedrooms and a bathroom are upstairs in the main section, with two chambers over the kitchen wing.The foundation of a barn that burned in the early 1900s are visible, as well as the outline of what is believed to be a now-vanished log kitchen, noted in the Jefferson County deed book as having living quarters above.The house was listed on the National Register of Historic Places in 1988.

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.