Officially sanctioned by the Bureau of International Expositions, twenty-five countries officially participated and a further five were unofficially represented. The theme was colonization, on the 50th anniversary of the establishment of the Congo Free State.
The fair attracted some twenty million visitors. Belgian architect Joseph van Neck was the principal architect of the fair and of the Art DecoPalais des Expositions (also known as the Grand Palais), with its interior concrete parabolic arches, and four heroic bronze statues on piers.
Michel MARY, Adrien Van der Burch, Commissaire général près l'Exposition Universelle et Internationale Bruxelles 1935 in Annales du Cercle royal d'histoire et d'archéologie du Canton de Soignies, XXXVII, 2004;