The new volume in this series on contempo- rary landscape architecture is concerned with how life quality can be increased by improving our living environment through planning and raising the quality of public space. How green do we want our housing to be? What are the essential criteria of a suc- cessful planning of open space in residential architecture? Will the changed relationship between city and country contribute to that, perhaps in the form of urban agriculture? This book is being published on the occa- sion of the German Landscape Architecture Award 2011, the Special Housing Environ- ment Award, and the largest competition for ideas from students and young professionals in landscape architecture and open space planning: the Peter Joseph Lenne? Award. With a revised design and reworked struc- ture, the essays and project descriptions in the book reveal the strategies with which the profession is meeting new challenges.