This chapter assesses how the global sphere is connected to the local level through a reflection on a poster on the streets of Atlanta. This poster indicates what it means to be a ‘good urban citizen’. The contribution argues that this poster with its call to behave reasonably and sustainably is an example of how global norms of good urban governance filter through to the local level. The poster is thus an artefact of the implications of international law on the ground. At the same time, it is connected with the growing importance of cities as global actors. Through networks such as the ‘C40 – Climate Leadership Group’ cities aspire to shape the global norms which are determining what global urban governance means today.