Mercadona wanted to build his main headquarters in Catalonia and one of its supermarkets in the heart of the technological district of Barcelona. Altogether 3500m2 plus an underground car park of 4000m2. As architects, our main challenge was to adapt the usual appearance of Mercadona's commercial buildings to the urban environment in which it was located. The strategy was simple and clear. Based on the guidelines of the company, the project was designed following the basic principle of functional separation; on one hand the supermarket, on the other, the offices and staff quarters. The main entrances to the building were placed at the confluence of both volumes. In order to preserve the volume, it were chosen microperforated concrete panels as facade skin. Behind them, the most openings were hidden.