With their unique confederated arrangement, Kazuyo Sejima and Ryue Nishizawa work as much together, in alliance, as they do separately, although most of their projects outside Japan have been carried under the dual label of SANAA. The firm’s increasing internationalization has enabled it to export the distilled elegance and evanescent materiality that permeate their aesthetic trail across the Japanese archipelago, dotted with buildings whose transparent edges aspire to the unbearable lightness of being. Arquitectura Viva presents this global reach with firm roots through two European experiences: the renovation of a Parisian department store and a new Milanese campus.