Argentine architect Clorindo Testa, responsible for the expansion and renovation of the Museo Nacional de Artes Visuales in 1970, designed this building, an example of brutalist architecture, a trend that flourished between 1950 and 1975, characterized mainly by the expressive and rational use of concrete. In the work called “Béton brut” (a name that refers to the French expression for “raw concrete”), the primary colors that Testa chose for the panels of the facade are turned —in a strict tonal correspondence— into a palette of grays, highlighting the strength and “truthfulness” of the materials.