The term “Brutalism” was coined in 1954 and refers to a style of modern architecture developed by Le Corbusier, who promoted the use of rough concrete and favored heavy forms. Reinforced concrete can take on sculptural qualities, as in Le Corbusier’s design for Notre-Dame-du-Haut (1950–1954), with its flowing roof line and round, asymmetrical tower. Brutalism was most popular during the 1960s and 1970s and coincided with the concept of art brut developed by artist Jean Dubuffet.