New york is the largest city in the United States and one of the most developed cities in the world. Manhattan is the most prosperous place in new york. Manhattan is one of the areas with the densest high-rise buildings in the world. It is also called the crossroads of the world and a world-famous financial center. However, it is in Manhattan, which is so important to the United States, that an international territory that does not belong to the United States has emerged. This place is the famous United Nations headquarters and the only international territory in the world. The United Nations Headquarters was built between 1949 and 1950, and the land was purchased by William J. Kendoff, a real estate agent in new york. North of the United Nations Headquarters is Dongsi 18 Street, west is First Avenue, south is Dongsi 12 Street, and east overlooks the East River, with a total area of 72,800 square meters. At that time, the cost of United Nations Headquarters reached $65 million.

United Nations Headquarters consists of United Nations Secretariat Building, United Nations General Assembly Building, Library, Conference Building and United Nations Garden. This land belongs to the United Nations and international territory, and the United States has no jurisdiction. The United States can enter here without the approval of the United Nations. Even if this land is in the center of new york, USA, if you want to visit it, as long as you are a resident of a Member State of the United Nations, you can enter it with your passport, even if you have no diplomatic relations with the United States. At present, the United Nations has 193 member countries and two observer countries, and sends 5,000 people to new york to attend the annual meeting every year. The flags of these member countries fly in alphabetical order in front of the United Nations building, which is very spectacular. At United Nations Headquarters, the most famous building is the United Nations Secretariat Building, which is154m high and has 39 floors. This is an early slab high-rise building and the earliest glass curtain wall building in the world. The front and rear facades of the building adopt aluminum alloy frames and green heat-absorbing glass curtain walls. The building is simple in shape, bright in color and strong in texture contrast. Although it was 70 years ago, it seems that it will not be out of date now.

There is also a library on the southwest side of the building, the full name of which is Dag Hammarskj? ld Library. The library was built in 196 1 year to commemorate the late United Nations Secretary-General Dag Hammarskj? ld, so it was named after him. The main collection of documents in the museum and the staff of the United Nations Headquarters use the United Nations Conference Building facing the East River on the east side of the United Nations Secretariat Building. Union buildings enjoys an excellent geographical location, but it only has offices in five countries: China, the United States, Russia, Britain and France. These five countries are the five permanent members of the UN Security Council and the most influential countries in the world today, so the weight of this building can be imagined. To the north of the United Nations Secretariat Building is the United Nations General Assembly Building, which is a building with sloping sides and a round roof at the top. This is the place where representatives of all United Nations Member States meet, and many important events about the world are voted here.

At the northernmost part of the United Nations Headquarters is the United Nations Garden, through which you can enter the United Nations Headquarters building. On the square in front of the building, the national flags of all member States are flying, which looks dignified and solemn. In the center of the garden stands a monument to Eleanor Roosevelt and various sculptures presented to the United Nations by other Member States. The United Nations is an intergovernmental organization composed of sovereign countries after World War II. The United Nations was founded in 1945 with the purpose of maintaining international peace and security. Developing friendly relations between countries on the basis of equality and mutual respect can also solve various contradictions and problems between countries. Although the headquarters of the United Nations is located in downtown new york, the United States, it has extraterritorial jurisdiction. Even if the United States has no jurisdiction over this, Americans can't just go in and out. The existence of the United Nations Headquarters also makes the United States the only country in the world with its own international territory.