How do our cities evolve, what forces drive their evolution, and how exactly do they change as a result? Zurich-based architecture firm EM2N has been working on urban transformation processes ever since its establishment in 1997. Initially, the firm's main focus was on the greater Zurich area, yet in recent years they have also developed and realized projects in Berlin, Brussels, and Hamburg. Over time, a diverse body of work has grown, more than half of which consists of conversions of existing buildings, resulting in numerous successes and a few failures, small structures and large-scale complexes, quick decisions and slow processes. What unites the designs, projects,