Mexico and the United Nations headquarters in New York City and to the other main UN agencies based in Geneva, Nairobi, Paris, Rome and Vienna. Mexico and the United Nations Mexico is one of the 51 founding members of the United Nations and was admitted into the organization in 1945. Since then, Mexico is a full member of all the UN agencies and participates actively within the organization and has diplomatic relations with most member states. On 26 June 1945, Mexico was represented in San Francisco by Ezequiel Padilla Peñaloza, Francisco Castillo Nájera and Manuel Tello Baurraud in the signing of the United Nations Charter.
Headquarters of the United Nations as UNICEF, have their headquarters at the UNHQ. The headquarters of the United Nations occupies a site beside the East River, on between of land purchased from the real estate developer William Zeckendorf Sr. At the time, the site was part of Turtle Bay, which was filled with slaughterhouses and tenement buildings. By the 1910s, there was also a pencil factory and a gas company building in Turtle Bay, on the site of the current UN headquarters. The development of Sutton Place and Beekman Place, north of the current UN site, came in the 1920s. A yacht club on the