Palais des Nations Unies, Verwaltungsgebäude E Genève- Pâquis-Nations, Canton Genf Building data System Igéco Construction period 1968–1973 Involved parties Architects Eugène Beaudouin, Jacques Carlu, André Gaillard, Arthur Lozeron, Basil Spence Engineers Bourquin & Stencek, Pier Luigi Nervi Building owner Organisation des Nations Unies (UN) Executing companies Igéco SA (Betonelemente)