Town twinning is a long-term tool for bringing people from different countries together. This formal partnership is based on a twinning agreement or official document signed by both mayors. It has been a useful tool in securing peace and reducing hostility between nations since the end of the Second World War. Through the direct involvement of European citizens, town twinning contributes to greater transnational understanding and cross-border interaction by focusing on the exchange of citizens. However, in recent decades there has been a massive decline in interactions through town twinning, and in the case of some towns or cities, twinning agreements are even in danger of extinction. This thesis sets out to examine the concept of town twinning, more specifically the twinning agreement between Munich and Bordeaux. Whereas the ties between the Bavarian and the Aquitaine capitols was lively and vivid in the beginning, it appears to be almost inactive in recent years. Media coverage of the town twinning has decreased enormously over the years and on the side of the city of Munich there are no interactions nor exchanges to Bordeaux, if not through the independent association Initiative München Bordeaux (IMB). What exactly has changed within the twinning interactions between the two cities and what possible reasons could there be? In order to examine the change in this specific twinning agreement, I compare the time frame from its foundation in May 1964 to 1968 to the years from 2015 to 2020. Decisive for maintaining close ties with the respective other city are engaged individuals that promote the twinning agreement as well as developing innovative ideas. No extensive research about the relationship between the twinned Bavarian and Aquitaine capital has been done thus far, however the reasons for change can be applied theoretically to other cities facing similar problems. The reasons for change in the case study of Munich and Bordeaux can be seen as a piece of the puzzle of the diversity of twinning relationships across Europe and are likely to be applicable to other twinning arrangements.