The old country town, situated at the base of the mountain, is based on a non compact urbanism. Detached houses and mansions, prestigious educative and health centers and a private and introverted life shape a different lonely, garden and textural Barcelona. With country estate holidays history, Sarrià Quarter become into the heart of the present bourgeoisie. The route goes into this urbanism and sociology; it also investigates a fertile laboratory of a rich residential rationalist architecture and its lessons based on dwelling.