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 Apartments across First Avenue from the Zeckendorf site. The city, in turn, spent $5 million on clearing the land. While the United Nations had dreamed of constructing an independent city for its new world capital, multiple obstacles soon forced the organization to downsize their plans. They ultimately decided to build on Rockefeller's East River plot, since the land was free and the land's owners were well known. The diminutive site on the East River necessitated a Rockefeller Center-type vertical complex, thus, it was a given that the Secretariat would be housed in a tall office tower. During daily meetings from