<b>Tschumi introduces the “concept-form”: a concept generating a form, or a form generating a concept.</b><p><i>Event-Cities 4</i> is the latest in the Event-Cities series from Bernard Tschumi, documenting recent built and theoretical projects in the context of his evolving views on architecture, urbanism, and design. Event-Cities C4 follows directly from the work of<i>Event-Cities 3</i>, which examined the interaction of architectural content, concept, and context. This volume takes the interaction a step further, looking at a series of projects for which program or context are insufficient as a generative conceptual strategy, hence requiring a different approach. Tschumi has said, “Over the past years, there is one word I have almost never used, except in order to attack it: ''form.''” In <i>Event-Cities 4</i>, Tschumi introduces the “concept-form”: a concept generating a form, or a form generating a concept, so that one reinforces the other. The c