The Professorship for Open Space and Ecological Urban Design deals with green and open spaces in the context of sustainable urban transitions. In particular, we are concerned with questions of planning and designing urban nature in terms of a multifunctional and resilient "green infrastructure" that provides multiple benefits for health and quality of life, social cohesion, environmental justice, adaptation to climate change and biodiversity. Our teaching focuses on the ecological foundations of urban design with special attention to the scale of the city and the urban region. Our research is inter- and transdisciplinary with a particular interest in the potential of innovative concepts for open-space planning and design in Germany and Europe. We contribute to application-oriented planning research and to the exchange of knowledge between research and practice.