Le Rhin à Bâle. Photo: TES.


The agglomeration of Basel is also known as Basiliensis Region, a cross-border region between South-Baden, Upper Alsace and North-West Switzerland. The issue of local or regional identity is still controversial, although economic boundaries are considerably less pronounced than 50 years ago. The organization TriRhena aims to intensify cross-border regional economic cooperation and promote participation on both sides of the Rhine.  (Further information: