ArchitectGuillaume GilletFrench architect (1912-1987), 1912–1987Photograph of one of their buildings · Adrian Grycuk · CC BY-SA 3.0 pl · Wikimedia Commons3 buildingsFranceBuildingsFrench Embassy at 1 Piękna Street WarsawŚródmieście, PolandPalais des congrès de Paris17th arrondissement of Paris, FranceÉglise Notre-Dame de RoyanRoyan, France