Quadrant of Washington, D.C.
Northwest (NW or N.W.) is the northwestern quadrant of Washington, D.C., the capital of the United States, and is located north of the National Mall and west of North Capitol Street. It is the largest of the four quadrants of the city (NW, NE, SW and SE), and it includes the central business district, the Federal Triangle, and the museums along the northern side of the National Mall, as well as many of the District's historic neighborhoods.
Politically, Northwest is made up of parts of Wards 1, 2, 3, 4, 5, and 6, with Wards 1 and 3 being the only wards located entirely within the quadrant.  The Northwest is the wealthiest quadrant of the city, particularly west of 16th Street. 
The population of Northwest is 340,531, based on the data collected in the latest U.S. Census Bureau release. The population is 48.33% male, and 51.67% female. There are 146,397 households, with 57,445 being family households, and 88,951 being non-family households. 
Northwest Washington, D.C. includes the following 58 neighborhoods:
Northwest contains many college campuses, including American University, George Washington University, Georgetown University, Howard University, and the University of the District of Columbia. Northwest also contains many primary and secondary schools, many of which are public schools administered by DCPS (District of Columbia Public Schools). There are 44 DCPS institutions in Northwest,  as well as many private schools, including St John's College High School, Sidwell Friends School, Gonzaga College High School, Duke Ellington School of the Arts, and Georgetown Day School, among others.  The Capital One Arena, home of the Washington Wizards, the Washington Capitals, and the Georgetown Hoyas as well as the venue for many concerts and other events, is located in the District's Chinatown in Northwest. The National Cathedral, the White House, Rock Creek Park, and Embassy Row are also located in this quadrant.
Northwest is bounded by the Potomac River on the west, Western Avenue and Eastern Avenue to the north, North Capitol Street to the east, and the National Mall to the south. Other principal roads include Connecticut Avenue between Chevy Chase and the White House, Wisconsin Avenue between Friendship Heights and Georgetown, Pennsylvania Avenue between Georgetown and the Capitol, K Street, Massachusetts Avenue (home to Embassy Row), and 16th Street.
Northwest is served by all six lines of the Washington Metro: the Orange, Silver, Red, Blue, Yellow, and Green Lines. Many Metrobus lines run through the quadrant, as well as the DC Circulator.
Adams Morgan is a neighborhood in Northwest Washington, D.C., centered at the intersection of 18th Street NW and Columbia Road, about 1.5 miles (2.54 km) north of the White House. Notable establishments in the neighborhood include the Washington Hilton and Madam's Organ Blues Bar. Notable residential buildings include Euclid Apartments, Fuller House, Park Tower, Meridian Mansions, and the Pink Palace. Embassies in the neighborhood include the Embassy of Lithuania, the Embassy of Poland, the Embassy of the Central African Republic, the Embassy of Gabon and the Embassy of Cuba. Notable public artwork in Adams Morgan includes Carry the Rainbow on Your Shoulders, The Servant Christ, and The Mama Ayesha's Restaurant Presidential Mural.
The Palisades, or simply Palisades, is a neighborhood in Washington, D.C., along the Potomac River, running roughly from the edge of the Georgetown University campus to the D.C.-Maryland boundary. MacArthur Boulevard is the main thoroughfare that passes through the Palisades.
Friendship Heights is an urban commercial and residential neighborhood in northwest Washington, D.C. and southern Montgomery County, Maryland. Though its borders are not clearly defined, Friendship Heights consists roughly of the neighborhoods and commercial areas around Wisconsin Avenue north of Fessenden Street NW and Tenleytown to Somerset Terrace and Willard Avenue in Maryland, and from River Road in the west to Reno Road and 41st Street in the east. Within Maryland west of Wisconsin Avenue is the Village of Friendship Heights, technically a special taxation district.
Kalorama is a neighborhood in Northwest Washington, D.C., United States. It includes the Kalorama Triangle Historic District and Sheridan-Kalorama Historic District. It is named after the Kalorama mansion.
Chevy Chase is a neighborhood in northwest Washington, D.C. It borders Chevy Chase, Maryland, a collection of similarly affluent neighborhoods.
Glover Park is a neighborhood in northwest Washington, D.C., about a half mile north of Georgetown and just west of the United States Naval Observatory and Number One Observatory Circle. Every morning and evening, Glover Park residents can hear the Naval Observatory play the sounding of colors synchronized to the nation's Master Clock. It is named after Charles Carroll Glover.
14th Street NW/SW is a street in Northwest and Southwest quadrants of Washington, D.C., located 1.25 miles (2.01 km) west of the U.S. Capitol. It runs from the 14th Street Bridge north to Eastern Avenue.
Neighborhoods in Washington, D.C., are distinguished by their history, culture, architecture, demographics, and geography. The names of 131 neighborhoods are unofficially defined by the D.C. Office of Planning. Neighborhoods can be defined by the boundaries of wards, historic districts, Advisory Neighborhood Commissions, civic associations, and business improvement districts (BIDs); these boundaries will overlap. The eight wards each elect a member to the Council of the District of Columbia and are redistricted every ten years.
Massachusetts Avenue is a major diagonal transverse road in Washington, D.C., and the Massachusetts Avenue Historic District is a historic district that includes part of it.
Connecticut Avenue is a major thoroughfare in the Northwest quadrant of Washington, D.C., and suburban Montgomery County, Maryland. It is one of the diagonal avenues radiating from the White House, and the segment south of Florida Avenue was one of the original streets in Pierre (Peter) Charles L'Enfant's plan for Washington. A five-mile segment north of Rock Creek was built in the 1890s by a real-estate developer.
The DC Circulator is a bus system in Washington, D.C. The District of Columbia Department of Transportation operates the service in a public–private partnership with RATP Dev.
The streets and highways of Washington, D.C., form the core of the surface transportation infrastructure in Washington, D.C., the federal capital of the United States. Given that it is a planned city, the city's streets follow a distinctive layout and addressing scheme. There are 1,500 miles (2,400 km) of public roads in the city, of which 1,392 miles (2,240 km) are owned and maintained by city government.
Downtown is the central business district located in the northwest quadrant of Washington, D.C. It is the fourth largest central business district in the United States. The "Traditional Downtown" has been defined as an area roughly between Union Station in the east and 16th Street NW in the west, and between the National Mall on the south and Massachusetts Avenue on the north, including Penn Quarter. However, nowadays, Downtown D.C. usually refers to a larger area, as the DC Office of Planning states:
…most residents, workers, and visitors think of Downtown in a broader sense — including areas as far north as Dupont Circle, as far west as Foggy Bottom, and as far east as Capitol Hill. Only about half of the central city workforce is located within the city’s traditional Downtown.
Washington, D.C., is the capital city and federal district of the United States. Below is a list of Washington, D.C.-related articles.
Washington, D.C., is administratively divided into four geographical quadrants of unequal size, each delineated by their ordinal directions from the medallion located in the Crypt under the Rotunda of the Capitol. Street and number addressing, centered on the Capitol, radiates out into each of the quadrants, producing a number of intersections of identically named cross-streets in each quadrant. Originally, the District of Columbia was a near-perfect square. However, even then the Capitol was never located at the geographic center of the territory. As a result, the quadrants are of greatly varying size. Northwest is quite large, encompassing over a third of the city's geographical area, while Southwest is little more than a neighborhood and military base.
The following outline is provided as an overview of and topical guide to District of Columbia:
Appleton Prentiss Clark Jr. was an American architect from Washington, D.C. During his 60-year career, Clark was responsible for designing hundreds of buildings in the Washington area, including homes, hotels, churches, apartments and commercial properties. He is considered one of the city's most prominent and influential architects from the late 19th and early 20th centuries. Many of his designs are now listed on the National Register of Historic Places (NRHP).
Washington, D.C., the capital of the United States, has a unique and diverse architectural history. Encompassing government, monumental, commercial, and residential buildings, D.C. is home to some of the country's most famous and popular structures designed by some of the leading architects of their time. The popularity of Washington's buildings is evident by the fact that a 2007 poll of Americans by the American Institute of Architects found that six of the top 10 most popular U.S. structures were located in Washington, D.C. Overall, 17 of the top 150 most popular structures were located in the capital.