The development of metropolitan regions in Germany in light of the restructuring of the German states: two temporally overlapping discourses

The topics of the territorial structure of the German states and the strategic development of the metropolitan regions are at first glance two completely separate discourses. However, this paper demonstrates that the development of the metropolitan regions in Germany, supported by Federal Spatial Planning, has at least in some cases been influenced by the possibility of offering an alternative to state restructuring and that the metropolitan regions today continue to represent a basis for interstate cooperation. The in-depth observation of four cross-state metropolitan regions makes clear that different development paths have been followed. Thus, while certain metropolitan regions have distanced themselves from issues relevant to interstate cooperation, the examples of Hamburg and Berlin-Brandenburg show the value of metropolitan regions for cooperation between states and as an alternative to state restructuring.