The documentary “Dreaming of a Treehouse” addresses the Ökohaus, an experimental collective housing project in Berlin,
conceived by the famous German architect/engineer Frei Otto
for the International Building Exhibition (IBA) of 1984-1987 held in Berlin. Through a series of interviews with the key players
involved in the design and realization process, it looks back on the implemented innovative ecological and adaptable design
strategies, as well as on the participatory co-design
process behind this remarkable building. It is one of
Frei Otto’s least known projects, yet a masterpiece and radical
consequence of his groundbreaking thinking on adaptability.
Interviews with Frei Otto, Christine Kanstinger-Otto,
Hermann Kendel, co-architects, planners as well as
inhabitants and participatory builders. Commentary by architects
Yona Friedman, Anne Lacaton and Jean-Philippe Vassal.

documentary, 65 minutes, 2011
DVD available at

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