In the western world, a growing conflict has emerged between the city and the automobile. Inheriting their traditional structure, these cities struggle to meet the increasing demands of vehicular traffic and at the same time become aware of the de-humanisation and un-sustainability of the city that they contribute to. While ring roads have become a common solution to divert unnecessary through traffic in the city centre, pedestrian systems have in many cases been constructed to recover the central area for pedestrians. But pedestrian systems are often regarded - uni-dimensionally - only as a system to enable efficient movement. This thesis addresses this serious conflict and also highlights changes in life-style and work patterns that are transforming the city centre into a focal point for leisure activities. Consequently, the need for pedestrian zones need not only be viewed in terms of an efficient mobility system but also as a place to live, to experience, to meet and see other people.