The research is based on a theoretical framework, labeled as an evolving network approach that aims to approach the subject of the urban transformation of the Buiksloterham area in Amsterdam-Noord in a holistic way and tries to analyze multiple scales and their relations ranging from the local to the global. Based on the analyses a conclusion is formulated considering the problems and potentials of the urban transition of Buiksloterham from a post-industrial area to a mixed live-work neighborhood. The problems of Buiksloterham are interpreted as based on spatial and organizational fragmentation, segregation of the public and the private domains, and stagnation and cutbacks on public space due to the economic crisis. Based on the analyses an urban strategy for the transformation of public space is developed that entails a network of temporary uses of vacant grounds in the area, labeled as the urban transition network. For the design project, a pilot project of this urban transition network is designed. This project entails a temporary public building, which aims to function as urban catalyst for the urban transition of the area.