Incorporating lecture theatres, a library and private study spaces, the Rolex Learning Centre, at the heart of the EPFL (Ecole Polytechnique Fédérale de Lausanne) university campus, has been designed to encourage discussions, meetings and work. The “wave-shaped” architectural concept was a major architectural challenge; it consists of two superimposed arched shells with openings, a smaller one and a larger one (the longer one spanning 80 metres). It called for a high degree of technical expertise in modelling and post-tensioning engineering. The challenge was well met by Bouygues Entreprises France-Europe !