The Icelander Einar Thorsteinn was one of the Pythagorean architects: those who see in geometry not a rigid scheme, but an intuitive living tool. This was thanks to his admiration of Buckminster Fuller and to his collaboration with Frei Otto, also recently deceased, in designing roofs for the Munich Olympic Stadium. Thereafter he never ceased to study lightweight structures and complex polyhedrons, a work he undertook solo, as in his projects for tensile structures fit for Iceland’s climate, but also in his capacity as advisor to institutions like NASA and artists like Olafur Eliasson, with whom he designed the crystalline facade of the Harpa concert hall in Reykjavik (see Arquitectura Viva 152).