This paper examines the means and consequences of a participatory design of Shared Spaces. Shared Space is a concept which aims at using traffic space as public space. The results of the work and analysis carried out in the course of this thesis provide practical advice on ventures related to Shared Space. Furthermore, the thesis lists basic insights and establishes a terminology to describe the participatory planning and design of public spaces. A theoretical line of reasoning is given based on three sources: documents concerning Shared Space, well-established insights in the use of participatory measures and an action and structuration-based perspective on spatial phenomena (Löw 2001, Giddens 1988). Following an evaluative approach, one notices a low degree of concrete definitions of the goals of the participatory aspect of Shared Space projects. Taking this into account, different participatory means and their uses are discussed. As a result, special care needs to be taken of developing, defining and communicating the aims and possibilities of the Shared Space project. Such a policy is of vital importance in order to activate all stakeholders, that is, the persons affected and concerned, in order to ensure the chances of cooperative planning and to have spatial structures as a result that meet the quality standards of Shared Space. In pursuance of the structuration-based perspective, Shared Space is not to be seen as a constructional arrangement but implies and is contingent upon human action. When planning, the involved persons have to have a profound understanding of the existing patterns of action in order to establish spatial structures with the quality of Shared Space. To ensure that, participatory means need to especially address the difficulty of the discursive accessibility of everyday spatial phenomena. Possibilities for this are intense as well as non-lingual means of participation.