Gulf Branch

Fort Ethan Allen was an earthwork fortification that the Union Army built in 1861 on the property of Gilbert Vanderwerken in Alexandria County (now Arlington County), Virginia, as part of the Civil War defenses of Washington (see Washington, D.C., in the American Civil War). The remains of the fort are now within Arlington County's Fort Ethan Allen Park.

Marymount University is a private Catholic university with its main campus in Arlington, Virginia. Marymount offers bachelor's, master's and doctoral degrees. It has approximately 4,257 students enrolled, representing 50 states and 70 countries.

The Saegmuller House is a historic home located in Arlington, Virginia. It was built between 1925 and 1927, and is 2+1⁄2-story, stuccoed frame central-hall plan dwelling with Prairie School influences. It sits on a concrete block foundation and has a pyramidal roof. It features an original front porch with large piers and columns and a prominent central gable and deep overhanging eaves. The house was once associated with the Saegmuller dairy farms operations.It was listed on the National Register of Historic Places in 2004.

Birchwood is a log house reconstructed in 1936 using logs from an earlier structure built in about 1836. It is located in Arlington County, Virginia. The first log house on the site was an even earlier structure built by Caleb Birch in approximately 1810 that burned down.Richard Wallace, valet to Rear Admiral Presley M. Rixey, lived here, and received President Theodore Roosevelt as a visitor.The house is recognized by Arlington County as a historic site and has installed a historic marker at the house.

Yorktown High School is a public high school located in Arlington County, Virginia. There are around 240 teachers and 2100 students as of 2019. In 2022-23 school year, there were 2,577 students. Yorktown's attendance area makes up the northern third of Arlington County.Yorktown is an accredited high school based on Virginia's Standards of Learning (SOL) examinations, and is accredited by the Southern Association of Colleges and Schools. The school was ranked among the top 100 schools in the nation by Newsweek in 2008.

Mount Olivet United Methodist Church is a Methodist church located in Arlington County, Virginia and occupies the oldest church site in continuous use in the county. The church and its cemetery are located at the southwest corner of Glebe Road and 16th Street North.

Earle Micajah Winslow House is a historic home located at Arlington County, Virginia. It was built in 1940, and is a two-story, concrete block structure veneered in brick and covered in a smooth stucco finish that is painted white. It has a shallow-pitched, side-gabled roof. A square projecting bay has a flat roof and a curved bay is crowned by a conical roof and a shallow hipped roof. The house features smooth walls, flat and shallow-pitched roofs, bands of wrapping windows, rounded corners, and a complete lack of applied ornamentation in the Streamline Moderne style.It was listed on the National Register of Historic Places in 2011.

Fort Marcy was a Union fortification protecting Washington, D.C. during the American Civil War. Its remains are now administered by the National Park Service as part of the George Washington Memorial Parkway in Fairfax County, Virginia.

Pimmit Run is a 7.8-mile-long (12.6 km) stream in northern Virginia that runs from Fairfax County to the Potomac River at Chain Bridge in the Arlingwood neighborhood of Arlington.

The Marden House is a residence in McLean, Virginia designed by American architect Frank Lloyd Wright. It is located just off Chain Bridge Road and overlooks the Potomac River. Also known as "Fontinalis," it is named after Luis Marden (1913–2003), a writer, photographer, and explorer for National Geographic. It was designed by Wright in 1952 and was completed in 1959 at a cost of $76,000. The spot had caught Marden's eye in 1944 when he and his wife and had been fishing along the Potomac. After purchasing a plot of land, Marden continued the correspondence he had maintained with Wright since 1940, asking the architect to design a home for him. It was not until 1952 that the designs finally came. After Marden moved to a nursing home in 1998, the house was purchased by Jim Kimsey, co-founder of AOL, in 2000 for $2.5 million.

The Chain Bridge is a viaduct which crosses the Potomac River at Little Falls in Washington, D.C. The steel girder bridge carries close to 22,000 cars a day. It connects Washington with affluent sections of Arlington and Fairfax counties in Virginia. On the Washington side, the bridge connects with Canal Road. Left turns onto the Clara Barton Parkway from the Chain Bridge are prohibited, but the reverse is permitted. On the Virginia side, the bridge connects with State Route 123 (Chain Bridge Road), which provides access to the George Washington Memorial Parkway. The Chain Bridge has three lanes (of which the center is reversible) and can be safely accessed by pedestrians and cyclists. The pedestrian sidewalk provides access to the Chesapeake and Ohio Canal towpath via a ramp. The bridge also carries water mains which provides Arlington County with water from the Washington Aqueduct.

Little Falls Branch, a 3.8-mile-long (6.1 km) tributary stream of the Potomac River, is located in Montgomery County, Maryland. In the 19th century, the stream was also called Powder Mill Branch. It drains portions of Bethesda, Somerset, Friendship Heights, and Washington, D.C., flows under the Chesapeake and Ohio Canal (C&O), and empties into the Potomac at Little Falls rapids, which marks the upper end of the tidal Potomac.