The land on which the headquarters was built is property of the French State. By a decree of December 22, 1952, it was assigned to the Ministry of Foreign Affairs "Ministry of Foreign Affairs (France)")[3]​ with a view to making it available to UNESCO. This was done through a lease contract for a duration of 99 renewable years, with the symbolic rent of 1000 francs per year, close to the emphyteusis. July.[7]​ The French Parliament, through a law enacted on August 6, 1955,[8]​ approved the lease contract and authorized the President of the Republic to ratify the headquarters agreement. The headquarters agreement came into force on November 23, 1955, and was published by a decree of January 11, 1956.[9]​.

When the building was built, a "committee for architecture and works of art" was created to select artists who would create works for specific locations: there are sculptures by Henry Moore, Alexander Calder and Eduardo Chillida on the outside, and inside a ceramic by Joan Miró, The Sky and the Moon, and a fresco by Picasso. In addition to this initial nucleus, UNESCO has acquired other works, especially by Appel, Bazaine, Noguchi, Tamayo, Afro Basaldella, Roberto Matta and Jean Arp. Between 1960 and 1985, the headquarters was expanded to accommodate the new Member States, which prompted the institution to acquire new pieces, including a copy of The Walking Man by Giacometti, the tapestry The Tower of the Sun by Jean Lurçat (towards the conference room) or the photograph The Reeds by Brassaï (on the seventh floor). States also made some donations, such as Tunisia, which offered a turn-of-the-century Roman mosaic, Diana the Huntress, and Iceland, which donated in 2007 a fresco by Erro, The Story of Thor. They are all ready to be integrated into the place and be visible to the workers as they pass by; UNESCO headquarters has a total of about seven hundred works.[10]​.

• - Place de Fontenoy.

• - UNESCO.

• - Wikimedia Commons hosts a multimedia category on Unesco Headquarters.

The main building, which houses the "Secretary (administration)" secretariat, is made up of seven floors that form a three-pointed star. Added to this is the so-called "accordion" building and the cubic building, which is intended for permanent delegations and non-governmental organizations. These buildings occupy a trapezoidal-shaped plot of land measuring 30,350 m², cut in its northeast corner by the semicircular shape of the Place de Fontenoy. It is surrounded by the avenues of Saxe"), Ségur"), Suffren") and Lowendal").

The land on which the headquarters was built is property of the French State. By a decree of December 22, 1952, it was assigned to the Ministry of Foreign Affairs "Ministry of Foreign Affairs (France)")[3]​ with a view to making it available to UNESCO. This was done through a lease contract for a duration of 99 renewable years, with the symbolic rent of 1000 francs per year, close to the emphyteusis. July.[7]​ The French Parliament, through a law enacted on August 6, 1955,[8]​ approved the lease contract and authorized the President of the Republic to ratify the headquarters agreement. The headquarters agreement came into force on November 23, 1955, and was published by a decree of January 11, 1956.[9]​.

When the building was built, a "committee for architecture and works of art" was created to select artists who would create works for specific locations: there are sculptures by Henry Moore, Alexander Calder and Eduardo Chillida on the outside, and inside a ceramic by Joan Miró, The Sky and the Moon, and a fresco by Picasso. In addition to this initial nucleus, UNESCO has acquired other works, especially by Appel, Bazaine, Noguchi, Tamayo, Afro Basaldella, Roberto Matta and Jean Arp. Between 1960 and 1985, the headquarters was expanded to accommodate the new Member States, which prompted the institution to acquire new pieces, including a copy of The Walking Man by Giacometti, the tapestry The Tower of the Sun by Jean Lurçat (towards the conference room) or the photograph The Reeds by Brassaï (on the seventh floor). States also made some donations, such as Tunisia, which offered a turn-of-the-century Roman mosaic, Diana the Huntress, and Iceland, which donated in 2007 a fresco by Erro, The Story of Thor. They are all ready to be integrated into the place and be visible to the workers as they pass by; UNESCO headquarters has a total of about seven hundred works.[10]​.

• - Place de Fontenoy.

• - UNESCO.

• - Wikimedia Commons hosts a multimedia category on Unesco Headquarters.