BiCi_N is a "living" map of Barcelona that visualizes the intricate relationship between the human body and the city. Using GPS (Global Positioning System) and A/V (Audio/Video) devices on Bicing bikes the city is understood from above and from below as a dynamic quantitative and qualitative ever-changing entity defined through the activities of numerous inhabitants. From these a collective story is assembled as users go about their lives. The bicycle as an extension of the human body into the city becomes a full-scale mapping instrument, which captures both the sensual/experiential and the scientific/abstract notation of the human body into the city body and viceversa.