1974 Speech of Sheikh Mujibur Rahman at the United Nations

The United Nations General Assembly Building is part of the headquarters of the United Nations in the Turtle Bay neighborhood of Manhattan in New York City. It contains the main assembly hall of the United Nations General Assembly, the main deliberative, policymaking, and representative organ of the United Nations (UN). The building was designed by a group of architects led by Wallace Harrison. It is connected with the other buildings in the UN headquarters, including the Secretariat Building and the Dag Hammarskjöld Library. Although the building is located within the United States, the site is under UN jurisdiction, so the building is exempt from some local regulations. The General Assembly Building is a four-story structure measuring 380 by 160 ft (116 by 49 m), with concave walls to the west and east, as well as a concave roof with a dome. The building contains a lobby for journalists and the general public to the north, as well as a lobby for delegates to the south. The central portion of the General Assembly Building is the General Assembly Hall, which has a seating capacity of 1,800 and measures 165 ft (50 m) long, 115 ft (35 m) wide, and 75 ft (23 m) tall. Each delegation has six seats in the hall, which face south toward a rostrum and a paneled semicircular wall with booths. The building also contains other spaces, including a delegates' lounge and the president of the United Nations General Assembly's offices on the second floor; a meditation room on the ground floor; and various shops and conference rooms in the basement. The design process for the United Nations headquarters formally began in February 1947. The General Assembly Building was the third building to be constructed at the headquarters, after the Secretariat and Conference buildings. Construction of the General Assembly Building's steelwork began in February 1950, and the building was formally dedicated on October 10, 1952. The rapid enlargement of the United Nations prompted the UN to modify the hall's layout several times in the 1960s. The General Assembly Hall was closed for renovation from 1978 to 1979 to accommodate additional delegations. The building started to deteriorate in the 1980s due to a lack of funding, and UN officials considered renovating the complex by the late 1990s, but the project was deferred for several years. As part of a wide-ranging project that began in 2008, the General Assembly Building was renovated from 2013 to 2014.

The Japanese Peace Bell is a bell donated to the United Nations Headquarters in New York City via the United Nations Association of Japan in June 1954. It is a bonsho (a Buddhist temple bell) that is 60 centimeters in diameter, 1 meter in height, and 116 kg in weight. It was established by Chiyoji Nakagawa. Ceremonies are held at the opening of the United Nations General Assembly in September each year as well as on the International Day of Peace on September 21, when the bell is rung in honor of world peace by the Secretary General, UN executives, and other public figures.

The United Nations is headquartered in Midtown Manhattan, New York City, United States, and the complex has served as the official headquarters of the United Nations since its completion in 1951. It is in the Turtle Bay neighborhood of Manhattan, on 17 to 18 acres (6.9 to 7.3 ha) of grounds overlooking the East River. Its borders are First Avenue on the west, East 42nd Street to the south, East 48th Street on the north, and the East River to the east. 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. Although it is physically situated in New York City, the land occupied by the United Nations Headquarters and the spaces of buildings that it rents are under the sole administration of the United Nations and not the U.S. government. They are technically extraterritorial through a treaty agreement with the U.S. government. However, in exchange for local police, fire protection, and other services, the United Nations agrees to acknowledge most local, state, and federal laws.None of the United Nations' 15 specialized agencies (such as UNESCO) are located at the headquarters. However, some "autonomous subsidiary organs", such as UNICEF, have their headquarters at the UNHQ.

Non-Violence, also known as The Knotted Gun, is a bronze sculpture by Swedish artist Carl Fredrik Reuterswärd of an oversized Colt Python .357 Magnum revolver with its muzzle tied in a knot.

The Ark of Return is a memorial in New York City dedicated to the victims of the Transatlantic slave trade. It was designed by Rodney Leon, a Haitian-American architect, and installed in 2015. It is located at the Visitors' Plaza of the Headquarters of the United Nations.

The Capture of Turtle Bay Depot was a military raid that took place in the early American Revolutionary War on July 20, 1775. The raid was on Turtle Bay Depot, a British magazine and storehouse. On the night of July 20, 1775, a raid, conducted by the Sons of Liberty and led by Marinus Willett, John Lamb, Isaac Sears, and Alexander McDougall, attacked the Turtle Bay Depot in Manhattan, New York. The raiders also seized the British ship Asia. The Sons of Liberty then sent the stores to Boston, patriots on Lake Champlain, and Fort Ticonderoga. After the capture of Turtle Bay Depot, the patriots established Turtle Bay Redoubt, an earthwork that was located on the site that would become the Headquarters of the United Nations.

The United Nations Secretariat Building is a skyscraper within the headquarters of the United Nations in the Turtle Bay neighborhood of Manhattan in New York City. It contains the offices of the United Nations Secretariat, the executive organ of the United Nations (UN). The building, designed in the International Style, is 505 ft (154 m) tall with 39 above-ground stories. It was designed by a group of architects led by Wallace Harrison. Although the building is located within the United States, the site is under UN jurisdiction, so the building is exempt from some local regulations. The Secretariat Building is designed as a rectangular slab measuring 72 by 287 ft (22 by 87 m); it is oriented from north to south and is connected with other buildings in the UN headquarters. The wider western and eastern elevations of the facade are glass curtain walls, while the narrower northern and southern elevations are made of marble. The Secretariat Building contains 889,000 sq ft (82,600 m2) of space. The lowest stories contain press offices, staff rooms, and other functions. The Secretariat offices are placed on the upper stories, which were originally arranged in a modular layout. The building also contains various pieces of artwork. The building's style has inspired the construction of other glass curtain wall buildings in Manhattan. The design process for the United Nations headquarters formally began in February 1947, and a groundbreaking ceremony for the Secretariat Building occurred on September 14, 1948. Staff started moving into the building on August 21, 1950, and it was completed in June 1951. Within a decade, the Secretariat Building was overcrowded, prompting the UN to build additional office space in the area. The building started to deteriorate in the 1980s due to a lack of funding, which was worsened by the fact that it did not meet modern New York City building codes. UN officials considered renovating the building by the late 1990s, but the project was deferred for several years. The Secretariat Building was renovated starting in 2010, and it reopened in phases from July to December 2012.

Single Form (BH 325) is a monumental bronze sculpture by the British artist Barbara Hepworth. It is her largest work, and one of her most prominent public commissions, displayed since 1964 in a circular water feature that forms a traffic island at the Headquarters of the United Nations in New York City, outside the United Nations Secretariat Building and the Dag Hammarskjöld Library. It is also the largest artwork cast by the Morris Singer foundry. Copies of a smaller version, Single Form (Memorial) (BH 314), are on public display outside the Johns Hopkins University's Paul H. Nitze School of Advanced International Studies in Washington, D.C. and in Battersea Park in London. The version in Battersea Park was granted a Grade II* listing in January 2016.

The Edgar J. Kaufmann Conference Center is a conference hall on the 12th floor of 809 United Nations Plaza in the Turtle Bay neighborhood of Manhattan in New York City. Designed by Finnish architect Alvar Aalto for professor Edgar Kaufmann Jr., it is one of four remaining designs by Aalto in the United States. The conference center was announced in 1962, during the construction of the Institute of International Education (IIE)'s headquarters, and was dedicated in December 1964. After the building was sold in 1998 to a group backed by Japanese financiers, there were several unsuccessful attempts to preserve the conference center as a New York City designated landmark. The conference center includes an elevator lobby, a reception hall, and two smaller conference rooms. The 4,500-square-foot (420 m2) reception hall contains birch rods, which Aalto characterized as resembling "spaghetti", as well as a sloping ceiling. Folding partition walls divided the reception hall from the smaller conference rooms. Aalto, working with his wife Elissa, designed various pieces of furniture within the conference center, which were largely manufactured in Finland.

The United States Mission to the United Nations (USUN) serves as the United States' delegation to the United Nations. USUN is responsible for carrying out the nation's participation in the world body. In 1947, the United States Mission was created by an act of Congress to assist the President and the Department of State in conducting United States policy at the United Nations. Since that time, USUN has served a vital role as the Department of State's UN branch. Today, USUN has approximately 150 people on staff who serve to represent the United States’ political, economic and social, legal, military, public diplomacy, and management interests at the United Nations. USUN is divided into the following sections: Executive; Washington; Political; Management and Reform; Economic and Social; Legal; Military Staff; Public Affairs; Host Country; Management; and Security. The United States Mission to the United Nations is located at 799 United Nations Plaza (between East 44th and 45th streets on First Avenue) across the street from United Nations Headquarters.

50 United Nations Plaza is a high-rise residential building in Manhattan, New York City. The 44-story tower was designed by the architectural firm Foster and Partners, making it the first residential building in the United States designed by Norman Foster, Baron Foster of Thames Bank. It includes 87 apartments.

One United Nations Plaza is a mixed-use building in Turtle Bay, Manhattan that was designed for the United Nations by Kevin Roche & John Dinkeloo.