Quest | An Urban Laboratory (Christian Burkhard, Florian Kohl) Prinzessinnengarten was founded in 2009 on Moritzplatz in Kreuzberg in the centre of the city of Berlin. Volunteers transformed a former wasteland into a thriving self-managed urban community garden. Die Laube (The Arbour) is a self-built, ten-metre-high, open wooden structure amidst the garden. It was developed and designed by Quest (Christian Burkhard and Florian Kohl) in collaboration with Marco Clausen (Prinzessinnengarten) to facilitate social learning through the construction process. Over 100 volunteers invested 10,000 hours to make the project a reality. Through the participatory act of building, die Laube reinforced connections between local initiatives and public institutions. Instead of being sold off to the highest bidder at the end of the current lease, it strives to evolve into a co-produced multi-purpose public space.