Yarrowsburg, Maryland

Elk Ridge, or Elk Mountain, is a mountain ridge of the Blue Ridge Mountains in Maryland and is the westernmost of four parallel ridges. It forms the western side of a narrow valley in which are situated the towns of Yarrowsburg and Brownsville. South Mountain is on the eastern side of this valley running roughly parallel to it. The ridge runs from Rohrersville, in the north, to the Potomac River across from Harpers Ferry, West Virginia, in the south. Across the Potomac the ridge continues as Blue Ridge Mountain in Virginia and West Virginia. To the west of Elk Mountain is the broader Cumberland Valley, in which lie the towns of Hagerstown and Chambersburg, and the Potomac River. The southern end of the ridge, which is part of Harpers Ferry National Historical Park, is known as Maryland Heights.

Garretts Mill is an unincorporated community and census-designated place in Washington County, Maryland, United States. Its population was 234 as of the 2010 census.

The Robert Clagett Farm is a historic home and farm located at Knoxville, Washington County, Maryland, United States. The house is a one-story sandstone structure measuring three bays long by two bays deep in the Georgian-style. The house features a two-story galleried porch and an interior stone chimney. The farm also includes a small 1875 stone-arched bridge, a mid-19th century dairy barn, a small shed-roofed frame outbuilding which may once have housed pigs, and a 1930s frame garage.The Robert Clagett Farm was listed on the National Register of Historic Places in 1999.

Brownsville (also Banjotown) is an unincorporated community and census-designated place in Washington County, Maryland, United States, near Gapland in an area known as Pleasant Valley. Its population was 89 as of the 2010 census.

Magnolia Plantation, also known as the Boteler-Holder Farm, is a historic house and former slave plantation located at Knoxville, Washington County, Maryland, United States. It is a 2-story, five-bay-wide house built about 1835, with a 1+1⁄2-story three-bay rear addition, set on finely coursed local fieldstone foundations. Also on the property are several modern outbuildings and a barn, and nearby is a private cemetery with a number of grave markers bearing the name Boteler.The Magnolia Plantation was listed on the National Register of Historic Places in 1975.

The Kennedy Farm is a National Historic Landmark property on Chestnut Grove Road in rural southern Washington County, Maryland. It is notable as the place where the radical abolitionist John Brown planned and began his raid on Harpers Ferry, Virginia (today West Virginia), in 1859. Also known as the John Brown Raid Headquarters and Kennedy Farmhouse, the log, stone, and brick building has been restored to its appearance at the time of the raid. The farm is now owned by a preservation nonprofit.

Samples Manor is an unincorporated community in Washington County, Maryland, United States. The Kennedy Farm was listed on the National Register of Historic Places in 1973.

Gapland is an unincorporated community and census-designated place in Washington County, Maryland, United States. Its population was 109 as of the 2010 census.

Weverton is an unincorporated community hamlet located in the southern tip of Washington County, Maryland, United States, near the north shore of the Potomac River. Its population is about 500. Weverton is located at the intersection of MD Route 67 and U.S. Route 340. The nearest incorporated communities are Harpers Ferry, West Virginia (1.5 miles (2.4 km) to the west) and Brunswick ( 2.7 miles (4.3 km) to the east). Weverton's approximate elevation is 475 feet (145 m) above sea level. Weverton Cliffs, at the southern end of South Mountain where that ridge is interrupted by the Potomac River, are a landmark on the Appalachian Trail; they sit nearly at the halfway point of the trail and are well-known to through hikers. Weverton is the northwestern end of CSX Transportation's Metropolitan Subdivision, a 79-mile rail line that runs to Washington, D.C.

Dargan is an unincorporated community and census-designated place in Washington County, Maryland, United States. Its population was 165 as of the 2010 census.

Gathland State Park is a public recreation area and historic preserve located on South Mountain near Burkittsville, Maryland, in the United States. The state park occupies the former estate of war correspondent George Alfred Townsend (1841-1914), who wrote under the pen name "Gath" during the American Civil War. The estate's few remaining original structures include the War Correspondents Memorial Arch, which sits alongside the Appalachian Trail. The park is operated by the Maryland Department of Natural Resources. The arch is a National Historic Monument maintained by the National Park Service.

The Crampton's Gap Historic District comprises the battlefield where the American Civil War Battle of Crampton's Gap, part of the larger Battle of South Mountain, took place on September 14, 1862. The district extends on the west to the foot of South Mountain, and to the east of Burkittsville, beyond the eastern foot of the mountain. The district is characterized by steep mountain terrain in the west and open farmland in the east, with the small town of Burkittsville in the center, which is itself listed as a historic district on the National Register of Historic Places. The district extends to the south to include Brownsville Gap. The district includes 98 contributing buildings, 78 of which are in the Burkittsville Historic District. Crampton's Gap at the crest of the mountain is encompassed by Gathland State Park, which features the War Correspondents Memorial Arch, erected in 1896 to memorialize journalists killed in wartime. The arch is listed on the National Register as part of Antietam National Battlefield. The mountainous portions of the district feature numerous stone walls, which were used by both sides for shelter against gunfire during the battle.The district was placed on the National Register of Historic Places on January 12, 2011.