A paradoxical project, the rooftop garden of de Beistegui apartment by Le Corbusier contradicts every notion of rationalism of which the Swiss architect was universally considered a fosterer. Conversely, the work appears clearly indebted to surrealist sources. We may not know if the ‘design’ principles were an explicit demand of the client, the flamboyant multi-millionnaire Carlos (Charles) de Beistegui, creator of a festif interior design style and famous for his party hosting skills, or a route the architect intended to follow, but without a doubt the project is open to “unexpected contrast and playful paradoxes” (quote from Rudy/Godinez), entirely foreign to Le Corbu’s later works. Yet, in an oil painting of 1918, that the architect entitled, (not by chance), The Fireplace, “a white cubic volume appears in perspective on an abstracted field of layered colors” (quote from Archpaper), revealing the decisive influence of surrealism in his oeuvre.