As we move further into the 21st century, the prominence of regions can no longer be taken for granted. A certain skepticism has developed with regard to the feasibility of marginal regions achieving self-sustained growth and states have maintained their role as regulators of economic and social activities. Thus, the notion of the region and its significance is currently much debated and contested. Illustrated with a wide range of European case studies, this volume brings together the main strands of these contestations, as economic, political and social actors attempt to institutionalise their vision of their region as the dominant form of territorial governance. It questions both the external delimitation and the internal constitution of regions and critically analyses the societal processes circumscribing ways in which regions are created, maintained and undermined. The volume provides a wide range of analytical perspectives to enable an understanding of the current mosaic of regionalism in Europe.