Olin Petzold nestles self-built treehouse in Swiss valley
Polycarbonate panels clad the exterior of this triangular treehouse in Switzerland‘s Locarno district, which was designed by Swiss architect Olin Petzold as a woodland writing studio. Perched among the trees in the Onsernone Valley, Casetta… Read More »Olin Petzold nestles self-built treehouse in Swiss valley





