The park refers to the covered Wienfluss flowing below the concrete cover of Kettenbückengasse.

In the proposel, the riverbed is reconstructed as walkable shell above ground.

On places where adjoining streets meet the structure, it reacts by cuttings that serve as accesses leading up into the shell.

Metal baskets planked with COR-TEN steel boards form the construction. Climbing plants cover the shell.

The ensemble of terraces is isolated from the city noises.