Abstract
The Swiss Federal Institute of Technology ETH Zürich is planning to build three wind turbines for the production of renewable energy. Their proposed location is near the campus of ETH Hönggerberg in the Käferberg open space. This open space is of high importance for the recreation of the local residents. It is one of the last open spaces in Zürich that is used agriculturally. In order to provide a broad forum for discussion and to examine the level of acceptance of the proposed wind turbines a new approach to participatory planning is pursued by introducing a virtual landscape model to a participatory planning workshop for which the different interest groups and stakeholders were invited. During the workshop different alternatives were discussed and suggested changes by the participants were incorporated in the 3D model and visualized. The results of the workshop show that 3D visualization is an important means of communication among the different interest groups. The workshop also shows that an early integration of 3D visualization combined with a participatory approach is an effective way to elucidate potential conflicts at an early stage of the planning process.