This study is an investigation of the transformation of the economic structure of two border city regions, Saarbrucken and Copenhagen. The reason for a comparative analysis is that they have a similar industrial background that was declining and accompanied by the rise of the service sector in the second half of the 20th century. This decline of industry also brought a transformation of the economic structure as well as new branches of economic activity. The transformation process accelerated and the economic development differed in the respective cases for the last two decades. The fact that...