2005, Stiller or Gantenbein, Zurich Gigantic urban superstructures on the Sihl riverside – with two-storey high balconies. Stiller or Gantenbein. Competition „Sihlbogen“, Zurich Leimbach, Switzerland, 2005, in collaboration with Vetsch Nipkow landscape architects. – Floor plan. Floor plan.(Gigantic urban superstructures on the Sihl riverside – with two-storey high balconies. Stiller or Gantenbein. Competition „Sihlbogen“, Zurich Leimbach, Switzerland, 2005) Model.(Superstructures on the Sihl riverside – with two-storey high balconies. Stiller or Gantenbein. Competition „Sihlbogen“, Zurich Leimbach, Switzerland, 2005) Model.(Gigantic urban superstructures on the Sihl riverside – with two-storey high balconies. Stiller or Gantenbein. Competition „Sihlbogen“, Zurich Leimbach, Switzerland, 2005)