Looking at this design you probably recognize the wooden Trellis as the one we use in gardens to assist Climbing Plants. And indeed it is the idea behind these trellis-walls. Nature can go wild against these walls and make these walls into great vertical-gardens.
The relatively simple crisscrossing wooden trellises span from ground to aboveroof on the exterior of the house, and are thus visible from floor to ceiling from within wherever there are windows to the outdoors and serve as a fence for the rooftop terrace./source
Architects Tham & Videgard,Hanson