First Avenue (Manhattan) in the context of "United Nations Headquarters"

The headquarters of the United Nations (UN) is on 17 to 18 acres (6.9 to 7.3 ha) of grounds in the Turtle Bay neighborhood of Midtown Manhattan in New York City. It borders First Avenue to the west, 42nd Street to the south, 48th Street to the north, and the East River to the east. Completed in 1952, the complex consists of several structures, including the Secretariat, Conference, and General Assembly buildings, and the Dag Hammarskjöld Library. The complex was designed by a board of architects led by Wallace Harrison and built by the architectural firm Harrison & Abramovitz, with final projects developed by Oscar Niemeyer and Le Corbusier. The term Turtle Bay is occasionally used as a metonym for the UN headquarters or for the United Nations as a whole.

The headquarters holds the seats of the principal organs of the UN, including the General Assembly and the Security Council, but excluding the International Court of Justice, which is seated in The Hague. The United Nations has three additional subsidiary regional headquarters or headquarters districts. These were opened in Geneva (Switzerland) in 1946, Vienna (Austria) in 1980, and Nairobi (Kenya) in 1996. These adjunct offices help represent UN interests, facilitate diplomatic activities, and enjoy certain extraterritorial privileges, but do not contain the seats of major organs.

125th Street, co-named Martin Luther King Jr. Boulevard is a two-way street that runs east–west in the New York City borough of Manhattan, from First Avenue on the east to Marginal Street, a service road for the Henry Hudson Parkway along the Hudson River in the west. It is often considered to be the "Main Street" of Harlem.

Notable buildings along 125th Street include the Apollo Theater, the Adam Clayton Powell Jr. State Office Building, the Hotel Theresa, the Studio Museum in Harlem, the Mount Morris Bank Building, Harlem Commonwealth Council, the Harlem Children's Zone, the Church of St. Joseph of the Holy Family, and the former West End Theatre, now home to the La Gree Baptist Church.

Tudor City is an apartment complex on the East Side of Manhattan in New York City, bordering the Turtle Bay and Murray Hill neighborhoods. It lies on a low cliff east of Second Avenue, between 40th and 43rd Streets, and overlooks First Avenue to the east. Designed and developed by the Fred F. French Company, the complex is named for its Tudor Revival architecture. Construction commenced in 1926, making it one of the first residential skyscraper complexes in the world. Tudor City was also one of the first and largest examples of a planned middle-class residential community in New York City. The complex is a New York City designated landmark district and is listed on the National Register of Historic Places.

The 13-building complex consists of 11 housing cooperative structures, one rental apartment building, and one short-term hotel, which collectively house 5,000 people. Most of Tudor City's buildings are arranged around 41st and 43rd Streets, which slope upward east of Second Avenue; the eastern ends of the two streets are connected by Tudor City Place, which crosses over 42nd Street. Two parks flank 42nd Street, and there was originally an 18-hole miniature golf course in the southern park. The buildings generally contained stone, brick, and terracotta facades, as well as ornate Tudor-style details. The Fred F. French Company advertised Tudor City heavily, erecting large signs on the roofs of two buildings on 42nd Street.