Downtown (Washington, D.C.) in the context of "Washington Naval Conference"

Washington Dulles International Airport (/ˈdʌlɪs/ DUL-iss) (IATA: IAD, ICAO: KIAD, FAA LID: IAD) – commonly known simply as Dulles Airport – is an international airport serving the United States's capital city, Washington, D.C. and its surrounding area. It is located 26 miles (42 km) west of downtown Washington, D.C., in Loudoun and Fairfax counties in Northern Virginia.

Opened in 1962, the airport is named after John Foster Dulles, an influential secretary of state during the Cold War who briefly represented New York in the United States Senate. Operated by the Metropolitan Washington Airports Authority, Dulles occupies 13,000 acres (20.3 sq mi; 52.6 km); IAD ranks third in the United States in terms of land area, after Denver International Airport and Dallas Fort Worth International Airport. The "striking" and "iconic" Eero Saarinen-designed Main Terminal received vast acclaim for its innovative architecture when it was completed and has gone on to win numerous awards.

Crystal City is an urban neighborhood in the southeastern corner of Arlington County, Virginia, approximately 5 miles (8.0 km) south of Downtown Washington, D.C. Due to its extensive integration of office buildings and residential high-rise buildings using underground corridors, travel between stores, offices, and residences, it is possible to travel much of the neighborhood without going above ground, making part of Crystal City an underground city.

Crystal City includes several aerospace manufacturing and defense industry companies, public sector consulting firms, government contractors, the U.S. Department of Labor, the U.S. Marshals Service, satellite offices for the Pentagon, and nonprofit organizations, including the International Foundation for Electoral Systems and the national headquarters for PBS.

K Street is a major thoroughfare in the United States capital of Washington, D.C., known as a center for lobbying and the location of numerous advocacy groups, law firms, trade associations, and think tanks. In political discourse, "K Street" has become a metonym for lobbying in the United States, the same way Wall Street in New York City became a metonym for the U.S. financial markets, since many lobbying firms are or traditionally were located on the section in Northwest Washington which passes from Georgetown through a portion of Downtown Washington, D.C.

Massachusetts Avenue is a major diagonal transverse road in Washington, D.C., United States. The Massachusetts Avenue Historic District is a historic district that includes part of it.

Massachusetts Avenue was part of Pierre Charles L'Enfant's original plan for the development of Washington, D.C. The avenue crosses three of Washington, D.C.'s four quadrants. It intersects every major north–south street and passes numerous Washington landmarks. Massachusetts Avenue represents the northern boundary of downtown and the city's Embassy Row.

Rhode Island Avenue is a diagonal avenue in the Northwest and Northeast quadrants of Washington, D.C., and the capital's inner suburbs in Prince George's County, Maryland. Paralleling New York Avenue, Rhode Island Avenue was one of the original streets in Pierre L'Enfant's plan for the capital. It became a major commuter route, carrying U.S. Route 1 traffic into the city from Prince George's County.

The western terminus of Rhode Island Avenue is in downtown Washington, at an intersection with Connecticut Avenue NW and M Street NW. The Cathedral of St. Matthew the Apostle is on Rhode Island Avenue NW, just east of that intersection. Just east of the cathedral, at Scott Circle, Rhode Island Avenue NW intersects Massachusetts Avenue NW and 16th Street NW. N Street NW stops short of meeting the circle from either direction, but is instead connected to Rhode Island and Massachusetts avenues NW through two short streets, Corregidor Street NW and Bataan Street NW. From Scott Circle, Rhode Island Avenue NW continues eastward to the Logan Circle neighborhood. At the traffic circle of the same name, Rhode Island Avenue NW intersects Vermont Avenue, 13th Street, and P Street NW.