The irruption of concepts such as ecology and sustainability in the world of architecture is generating a new language to understand our building's ambiances. Once again, the separation of structural and environmental issues advocated by modern architecture is being challenged. Nevertheless, a broader look of modernity demonstrates pioneering of both technical and plastic approaches. By recalling the latest work of modern architects like Le Corbusier through current methods, such as monitoring and simulation, we can highlight its valuable environmental awareness.