In case you were wondering, as I sure was, Brutalism is a style of architecture characterised by minimalist constructions that showcase the raw materials used to make them. (The term 'Brutalism' comes from the French word 'brut', which means 'raw'.)
When we got in touch with a filmmaker, he had a few shooting locations in mind. So the day before the shoot, we went to scout out Les Olympiades in Paris' 13th arrondissement and Montigny-le-Bretonneux to the south of Versailles.