In recent years, cities across the world have witnessed the rejuvenation of previously benighted neighbourhoods as cheap rents and available premises have allowed small scale businesses and creative actors to move in. At the forefront of this have been the former East Berlin district of Prenzleuer Berg, Mariahilf in Vienna and Williamsburg, the neighbourhood that kick started Brooklyn's emergence from the doldrums. This book provides a comparative analysis of these gentrification processes as well as a comprehensive understanding of diverging urban rejuvenation practices in New York City, Berlin and Vienna. By analysing the respective policy, regulatory and supporting frameworks at the planning levels, lessons can be drawn for how these mechanisms can influence future regeneration trajectories.