This paper builds on the authors definition of Steelscapes to examine, through the case of the Metropolitan Region of Linz, the spatial-functional relationships between territories, spaces, and socio-economic dimensions shaped by the steel industry. By locating and mapping Steelscapes through the conceptual lens of Steelscape Metabolism, it challenges conventional spatial planning and design paradigms, which are grounded in linear economic growth models. This new systemic definition integrates local spatial configurations and territorial conditions with insights from literature on Urban Metabolism and contemporary theoretical approaches on Circular Societies. In address- ing today’s challenges, particularly uncertainties triggered by extreme climate events, economic disruptions, and geopolitical instability, this paper aims to uncover alternative pathways for spatial planning and design, fostering more adaptive and sustainable approaches.