Revision with unchanged content. The aim of this study was to show, how agents of Creative Industries use specific milieus in a context of Creative City to transform Creativity into Cultural Goods and Services. Based on the broad empirical data pool, this investigation contributes to the comprehension of Berlins CIs, including the artists. This study followed a predominately deductive, actor-oriented approach combining quantitative and qualitative methods. From the construction of a research design, its application with the help of a comparative case-study analysis (Advertising, Music industry and Visual Artists) to the de- and reconstruction of applied theory. In addition the book present a general description of the geographic features of the Creative Industry in Berlin, Germany, paying special attention to its intra-regional concentrations. In accordance with the results from the questionnaire survey (around 1,200 cases) as well as the interviews (75 interviews), the author proposes that network structures exist for the investigated spatial clusters in Berlin.