Swiss-born architect Philippe Rahm shares his understanding of architecture as a philosophy, whose foundations lie not in structural elements, but in the exploration of climates and atmospheres. Growing up in a small country like Switzerland, Rahm explains, avoids falling prey to the influences of architectural ‘fashion’ in one's own nation, allowing architects to remain attentive to detail and to tend to the needs of populations and habitats. Together, we explore how Rahm’s architecture combines innovation and human experiences with the ever-important theme of sustainability.