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Gallery Place is a Washington Metro station in Washington, D.C., United States, on the Green, Red and Yellow Lines. It is a transfer station between the Red Line on the upper level and the Green/Yellow Lines on the lower level.

L'Enfant Plaza is an intermodal transit station complex located at L'Enfant Plaza in the Southwest Federal Center neighborhood of Washington, D.C. It consists of an underground Washington Metro rapid transit station and an elevated Virginia Railway Express commuter rail station.

The Potomac River is a major river in the Mid-Atlantic region of the United States that flows from the Potomac Highlands in West Virginia to the Chesapeake Bay in Maryland. It is 405 miles (652 km) long, with a drainage area of 14,700 square miles (38,000 km2), and is the fourth-largest river along the East Coast of the United States and the 21st-largest in the United States. Over 5 million people live within its watershed.

Pentagon Transit Center is a split platform station on the Washington Metro located adjacent to The Pentagon in Arlington, Virginia. The station was opened on July 1, 1977, and is operated by the Washington Metropolitan Area Transit Authority. Providing service for both the Blue and Yellow Lines, the station is where the two lines diverge and thus acts as a transfer point. Northbound, the Blue Line continues through Virginia and the Yellow Line crosses the Potomac River into the District of Columbia.

The first cases relating to the COVID-19 pandemic in Washington, D.C., were reported on March 7, 2020. The city has enacted a variety of public health measures in an attempt to curb the spread of the virus, including limiting business activities, suspending non-essential work, and closing down schools.

The inauguration of Joe Biden as the 46th president of the United States took place on Wednesday, January 20, 2021, marking the start of the four-year term of Joe Biden as president and Kamala Harris as vice president. The 59th presidential inauguration took place on the West Front of the United States Capitol in Washington, D.C. Biden took the presidential oath of office, before which Harris took the vice presidential oath of office.

An island platform is a station layout arrangement where a single platform is positioned between two tracks within a railway station, tram stop or transitway interchange. Island platforms are popular on twin-track routes due to pragmatic and cost reasons. They are also useful within larger stations where local and express services for the same direction of travel can be provided from opposite sides of the same platform thereby simplifying transfers between the two tracks. An alternative arrangement is to position side platforms on either side of the tracks. The historical use of island platforms depends greatly upon the location. In the United Kingdom the use of island platforms is relatively common when the railway line is in a cutting or raised on an embankment, as this makes it easier to provide access to the platform without walking across the tracks.

The Green Line is a rapid transit line of the Washington Metro system, consisting of 21 stations in the District of Columbia and Prince George's County, Maryland, United States. The Green Line runs from Branch Avenue to Greenbelt. It was the last line in the original Metrorail plan to be constructed, and is one of three north–south lines through the city of Washington. The Green Line shares tracks with the Yellow line from L'Enfant Plaza to Greenbelt.

Branch Avenue is an island-platformed Washington Metro station in Suitland, Maryland, United States. The station was opened on January 13, 2001, and is operated by the Washington Metropolitan Area Transit Authority (WMATA). The station presently serves as the southeastern terminus for the Green Line, with the Branch Avenue rail yard lying just beyond this station. The station is located near the intersection of Auth Road and Old Soper Road. The station has received a lot of criticism for its confusing layout, difficult to find parking and overall poor design. The station is also known for its expensive parking, often discouraging riders from using the station.

L'Enfant Plaza is an intermodal transit station complex located at L'Enfant Plaza in the Southwest Federal Center neighborhood of Washington, D.C. It consists of an underground Washington Metro rapid transit station and an elevated Virginia Railway Express commuter rail station.

The Yellow Line is a rapid transit line of the Washington Metro system that runs between Huntington Station in Virginia and Greenbelt station in Maryland. It consists of 21 stations in Fairfax County, Alexandria County, and Arlington County in Virginia, as well as Washington, D.C. and Prince George's County, Maryland.

Huntington is an island-platformed Washington Metro station in the Huntington area of Fairfax County, Virginia, United States. The station was opened on December 17, 1983, and is operated by the Washington Metropolitan Area Transit Authority (WMATA). Serving as the southern terminus for the Yellow Line, the station is built into a hillside; the south mezzanine, along with escalator access, is accessible via an incline elevator.

Greenbelt station is a Washington Metro and MARC station in Prince George's County, Maryland. The station is the northeastern terminus of both the Green and Yellow lines of the Washington Metro. MARC commuter rail trains on the Camden Line also stop at Greenbelt on a set of tracks parallel to the Metro tracks.

Gallery Place is a Washington Metro station in Washington, D.C., United States, on the Green, Red and Yellow Lines. It is a transfer station between the Red Line on the upper level and the Green/Yellow Lines on the lower level.

The Embassy of Canada in Washington, D.C. is Canada's main diplomatic mission to the United States. The embassy building designed by Arthur Erickson and opened in 1989 is located at 501 Pennsylvania Avenue Northwest, Washington, D.C., between the United States Capitol and the White House, just north of the National Gallery of Art. In addition to its diplomatic role, the embassy provides consular services for Delaware, Washington, D.C., Maryland, Virginia, and West Virginia. It also hosts a Trade Commissioner Service office, which has Maryland, Washington, D.C., Virginia, and West Virginia as its responsibilities.

The Federal Trade Commission (FTC) is an independent agency of the United States government whose principal mission is the enforcement of civil (non-criminal) antitrust law and the promotion of consumer protection. The FTC shares jurisdiction over federal civil antitrust enforcement with the Department of Justice Antitrust Division. The agency is headquartered in the Federal Trade Commission Building in Washington, DC.

Ford's Theatre is a theater located in Washington, D.C., which opened in August 1863. The theater is infamous for being the site of the assassination of Abraham Lincoln. On the night of April 14, 1865, John Wilkes Booth entered the theater box where Lincoln and his wife were watching a performance of Our American Cousin, slipped the single-shot, 5.87-inch derringer from his pocket and fired at Lincoln's head. After being shot, the fatally wounded Lincoln was carried across the street to the Petersen House, where he died the next morning.

The Grand Army of the Republic (GAR) was a fraternal organization composed of veterans of the Union Army, Union Navy, and the Marines who served in the American Civil War. It was founded in 1866 in Decatur, Illinois, and grew to include hundreds of "posts" across the North and West. It was dissolved in 1956 at the death of its last member.

The J. Edgar Hoover Building is a low-rise office building located at 935 Pennsylvania Avenue NW in Washington, D.C., in the United States, and serves as this official headquarters of the Federal Bureau of Investigation (FBI). Planning for the building began in 1962, and a site was formally selected in January 1963. Design work, focusing on avoiding the blocky, monolithic structure typical of most federal architecture at the time, began in 1963 and was largely complete by 1964. Land clearance and excavation of the foundation began in March 1965; delays in obtaining congressional funding meant that only the three-story substructure was complete by 1970. Work on the superstructure began in May 1971. These delays meant that the cost of the project grew from $60 million to $126.108 million. Construction finished in September 1975, and President Gerald Ford dedicated the structure on September 30, 1975.

The Federal Bureau of Investigation (FBI) is the domestic intelligence and security service of the United States and its principal federal law enforcement agency. Operating under the jurisdiction of the United States Department of Justice, the FBI is also a member of the U.S. Intelligence Community and reports to both the Attorney General and the Director of National Intelligence. A leading U.S. counterterrorism, counterintelligence, and criminal investigative organization, the FBI has jurisdiction over violations of more than 200 categories of federal crimes.

The National Archives and Records Administration (NARA) is an "independent federal agency of the United States government within the executive branch", charged with the preservation and documentation of government and historical records. It is also tasked with increasing public access to those documents which make up the National Archive. NARA is officially responsible for maintaining and publishing the legally authentic and authoritative copies of acts of Congress, presidential directives, and federal regulations. NARA also transmits votes of the Electoral College to Congress. It also examines Electoral College and constitutional amendment ratification documents for prima facie legal sufficiency and an authenticating signature.

The National Gallery of Art, and its attached Sculpture Garden, is a national art museum in Washington, D.C., United States, located on the National Mall, between 3rd and 9th Streets, at Constitution Avenue NW. Open to the public and free of charge, the museum was privately established in 1937 for the American people by a joint resolution of the United States Congress. Andrew W. Mellon donated a substantial art collection and funds for construction. The core collection includes major works of art donated by Paul Mellon, Ailsa Mellon Bruce, Lessing J. Rosenwald, Samuel Henry Kress, Rush Harrison Kress, Peter Arrell Browne Widener, Joseph E. Widener, and Chester Dale. The Gallery's collection of paintings, drawings, prints, photographs, sculpture, medals, and decorative arts traces the development of Western Art from the Middle Ages to the present, including the only painting by Leonardo da Vinci in the Americas and the largest mobile created by Alexander Calder.

The National Mall is a landscaped park near the downtown area of Washington, D.C., the capital city of the United States. It contains and borders a number of museums of the Smithsonian Institution, art galleries, cultural institutions, and various memorials, sculptures, and statues. It is administered by the National Park Service (NPS) of the United States Department of the Interior as part of the National Mall and Memorial Parks unit of the National Park System. The park receives approximately 24 million visitors each year.

The National Museum of Natural History is a natural history museum administered by the Smithsonian Institution, located on the National Mall in Washington, D.C., United States. It has free admission and is open 364 days a year. In 2021, with 7.1 million visitors, it was the eighteenth most visited museum in the world and the second most visited natural history museum in the world after the Natural History Museum in London. Opened in 1910, the museum on the National Mall was one of the first Smithsonian buildings constructed exclusively to hold the national collections and research facilities. The main building has an overall area of 1.5 million square feet (140,000 m2) with 325,000 square feet (30,200 m2) of exhibition and public space and houses over 1,000 employees.

The Newseum was an American museum dedicated to news and journalism that promoted free expression and the First Amendment to the United States Constitution, while tracing the evolution of communication.

The Temperance Fountain is a fountain and statue located in Washington, D.C., donated to the city in 1882 by Henry D. Cogswell, a dentist from San Francisco, California, who was a crusader in the temperance movement. This fountain was one of a series of temperance fountains he designed and commissioned in a belief that easy access to cool drinking water would keep people from consuming alcoholic beverages.