This book provides an overview of well-known large group designs such as Future Conference and Open Space. It also offers the reader insights into the wealth of experience with tailored large events selected by the authors from various international contexts. The focus is primarily on: organizational development of commercial enterprises, consulting for municipalities and communities, politics, and churches. The underlying theories of large group dynamics and large group phenomena serve as a common thread throughout the international case studies. The authors share their experiences with great openness, which they have made as pioneers, highlighting both the energetic opportunities and the potential pitfalls of large group events.