Christian Burkhard and Florian Köhl have worked together since 2013 to develop spatial structures which further diverse, lively and prosperous neighbourhoods and cities. In 2015, they co-developed die Laube, a vertical green structure in the Prinzessinnengarten, an urban garden in Berlin Kreuzberg. In 2016 they co-founded Quest, a Berlin based research and design outfit which focuses on architecture in support of urban ecosystems.