'Media, mountains and architecture are interfaces of three inhabitable natural realms: the digital, the natural, and the artificial. Three manifestations that call for a new organization of the way they interact: the physical world is transformed by the emergence of the digital world; the constructed environment is transformed by what used previously to be called "natural"; the digital develops its own internal laws and builds its own operative world. All three phenomena vibrate simultaneously when faced with any kind of human action. My projects explore people's capacity to construct an inhabitable environment by assuming this new threeway interaction. Starting from the hypothesis that the end purpose of architecture is not (solely) to build but also to define environments where human life can be organized, I work as much through action as through omission; with stones as well as with glass and "bits"; in urban and rural territories; and in the physical and virtual worlds.' Vicente Guallart is co-founder of the Barcelona practice Why Art Projects and of the Metapolis group. He is co-director of the Media house project and director of the Institute of Advanced Architecture of Catalonia, as well as co-author of the Metapolis Dictionary of Advanced Architecture.