2018 Cities grow and change. New urban space emerges and existing urban spaces are being changed. We expect from these spaces not only to fulfil important functions, but also to possess particular spatial qualities. How can such qualities be defined and evaluated? Jürgen Weidinger answers to these questions by engagement with the phenomenon of atmosphere. The reader presents comments by internationally active landscape architects as well as writers from different fields such as environmental psychology, theatre studies, the arts and literature studies.