[1] The design of the UNESCO Headquarters building was the combined work of three architects: Bernard Zehrfuss (France), Marcel Breuer (Hungary), and Pier Luigi Nervi (Italy).
Plans were also validated by an international committee of five architects composed of Lúcio Costa (Brazil), Walter Gropius (Germany/United States), Le Corbusier (France), Sven Markelius (Sweden) and Ernesto Nathan Rogers (Italy), with the collaboration of Eero Saarinen (Finland).
These buildings occupy a trapezoidal area of land measuring 30,350 square metres (326,700 sq ft), cut in the northeast corner of the semi-circular shape of the Place de Fontenoy.
In addition, the residence of this intergovernmental organization on the French territory is governed by a headquarters agreement that defines its privileges and immunities.
[3][4] The French Parliament approved the lease by a law enacted on 6 August 1955,[5] authorized the President of the Republic to ratify the Headquarters Agreement.