In the central axis of the opera-house floats a sculpture. At close range the inside becomes visible - a way. During the walk one asks himself whether the ground is steady under the feet or flexibly.
The feeling increases if one begins the way from the opposite side on the promenade. Inside of a concrete construction one wins in height, come around on top to enter the sculpture.

Now the following step is special. It is to be generated in the position a short-term imbalance. One single person can move hundreds of metric tons.If one of the abovementioned annual events takes place on the place, the building closes for visitors, stands up and presents itself as a clear land mark around Zurich on the temporary change to draw the attention. Now all year round the place has his users, and the city a new postcard motive.