Darnestown, Maryland

Valley Mill is a children's day summer camp and kayaking school in Germantown, Maryland. It is accredited by the American Camp Association.

The Darnestown Presbyterian Church dates back to the 1850s, and is located in Darnestown, Maryland. It is a Presbyterian Church (USA) congregation and a member of the National Capital Presbytery. Behind the church building is a cemetery with the graves of many of the early settlers of western Montgomery County, and some of the local roads and villages are namesakes of members of those pioneering families. The first European landowner in the Darnestown area was Ninian Beall, who settled around 1749. Some Beall family members are buried in the church cemetery. Construction of the church began in 1855, after community leader John L. DuFief donated three acres (1.2 ha) of land. The cornerstone was laid on September 14, 1856, and a small vernacular frame building with no steeple and no stained-glass windows was constructed. The completed church was dedicated on May 22, 1858. In 1897, a bell tower and parlor were added. Improvements in 1952 and 1953 included expansion of the building, stained glass windows, and a Hammond organ. Today (2022), the church has about 350 members and is active in the community. The church and cemetery are located close to the intersection of Darnestown Road and Turkey Foot Road.

Dierssen Wildlife Management Area is a Wildlife Management Area (WMA) near Seneca in Montgomery County, Maryland.The WMA covers a 40-acre (16 ha) tract of marshy woodland, with two man-made ponds ('impoundments') for wildlife, located between Chesapeake & Ohio Canal towpath (mileposts 20.08 to 20.90) and the Potomac River. The nearest access point is the Pennyfield Lock parking lot at MP 19.7. Unlike most WMAs in Maryland, Dierrsen is a wildlife sanctuary - no hunting is allowed, but hiking and photography are encouraged. Because of the impoundments and location on the Potomac migration route, the tract is a well-known habitat for waterfowl, wading birds and songbirds. There are nesting boxes for wood ducks. Also present are white-tailed deer, gray and red fox, beaver, and wild turkeys. The site, donated as a waterfowl sanctuary, is named for Marshall Bidwell Dierssen.

Muddy Branch is a tributary stream of the Potomac River in Montgomery County, Maryland, United States, located about 14 miles (23 km) northwest of Washington, D.C.

WSBN (630 kHz) is a commercial AM sports radio station licensed to Washington, D.C., and serving the Washington metro area. It operates with 10,000 watts in the daytime and 2,700 watts at night using a directional antenna around the clock. WSBN's studios are on Jenifer Street in Northwest Washington. The transmitter is located off Black Rock Road in Germantown, Maryland.WSBN is owned and operated by Cumulus Media and is affiliated with ESPN Radio. It is one of the oldest radio stations in the Washington media market, continuously on the air from 1925. For most of its history, the station operated as WMAL; on July 1, 2019, its talk programming was moved exclusively to co-owned WMAL-FM at 105.9 MHz, which had simulcast with 630 am since 2011.

Seneca is an unincorporated community in Montgomery County, Maryland, United States. It is located near the intersection of River Road and Seneca Creek, not far from the Chesapeake and Ohio Canal (C&O Canal) and Potomac River. Its history goes back before the American Revolutionary War and it thrived when the canal was operating—having several warehouses, mills, a store, a hotel, and a school. Fighting occurred in the area on more than one occasion during the American Civil War. The community declined as the C&O Canal declined. Today (2020), the community uses a Poolesville ZIP code, but is part of the Darnestown census-designated place. The Seneca schoolhouse is a museum, and nearby Riley's Lock and lock house are part of the Chesapeake and Ohio Canal National Historical Park. The community is located near the Dierssen Wildlife Management Area and the McKee-Beshers Wildlife Management Area. Since 1978, Seneca and additional territory have been part of the Seneca Historic District.

Seneca Dam was the last in a series of dams proposed on the Potomac River in the area of the Great Falls of the Potomac. Apart from small-scale dams intended to divert water for municipal use in the District of Columbia and into the Chesapeake and Ohio Canal, no version of any scheme was ever built. In most cases the proposed reservoir would have extended upriver to Harpers Ferry, West Virginia. The project was part of a program of as many as sixteen major dams in the Potomac watershed, most of which were never built. The earliest proposals for exploitation of hydropower on the Potomac were made in the 1880s. By the 1920s the U.S. Army Corps of Engineers reviewed the possibilities for hydroelectric power. After a new study mandated by Congress in 1936-37, the Corps of Engineers in 1938 proposed a dam for flood control, power generation and water quality improvement, to be located above Great Falls at Riverbend. The scheme was revived following World War II. Opposition to the flooding of the entire river to Cumberland by a chain of dams, and to the inundation of the Chesapeake and Ohio Canal doomed the Riverbend proposal. However, in 1963 the Corps proposed a new plan to improve water quality on the Potomac, which moved water storage off the main stem of the Potomac to its upper tributaries and scaled the Riverbend dam back to a lower dam at Blockhouse Point, near the mouth of Little Seneca Creek, to be called Seneca Dam. This proposal was debated through the 1960s until it was finally abandoned in 1969.

The Seneca Historic District is a national historic district located at Poolesville, Montgomery County, Maryland. The district comprises 3,850 acres (1,560 ha) of federal, state, and county parkland and farmland in which 15 historic buildings are situated. The Chesapeake and Ohio Canal, including Seneca Aqueduct (Aqueduct No. 1), Lock No. 24 (Riley's Lock), the adjacent lock house; as well as the Seneca Quarry and quarry masters house above the quarry also stand within the district and are also within Seneca Creek State Park. The 15 historic structures are surrounded by dependencies of various periods, in most cases dating from the period of the dwelling. There are slave quarters, smokehouses, springhouses, corn cribs, and tobacco barns.It was listed on the National Register of Historic Places in 1978.

Seneca Creek is a 5.8-mile-long (9.3 km) stream in Montgomery County, Maryland, USA, roughly 16 miles (26 km) northwest of Washington, D.C. It drains into the Potomac River.

Seneca Aqueduct — or Aqueduct No. 1 — is a naviduct that carries the Chesapeake and Ohio Canal (C&O) over Seneca Creek in Montgomery County, Maryland. The C&O built eleven aqueducts along its 184.5 miles (296.9 km) length. Seneca Aqueduct is a unique structure, not only being the first built, but also the only red sandstone aqueduct on the C&O−and the only aqueduct that is also a lock (Lock 24, or Riley's Lock). It is located at the end of Riley's Lock Road in Seneca, Maryland.

"The River of Blood" is a monument located on a golf course in Lowes Island, Virginia, owned by former President of the United States Donald Trump. A plaque signed with Trump's name states that the monument marks what Trump claims is an American Civil War battle site having significant casualties, although no listed battle or publicly disclosed event with any recorded casualties took place at the site.

The Travilah Oak is a large White Oak located in the Potomac Oak Shopping Center. The shopping center is located at the corner of Travilah Road and Glen Road in Travilah, Maryland. The Travilah Oak is believed to be over 330 years old. According to January 2021 measurements by the Maryland Big Tree Program, the Travilah Oak has a circumference of 19' 1", a height of 78', and a crown that stretches 110' in all directions.