This chapter discusses the advantages and limits of different tools in participatory processes regarding landscape projects. It presents a brief theoretical review of the relations between landscape policies and landscape concepts by focusing on the French situation. Four study projects concerning local participatory planning conducted by the authors have provided observations on the ways several techniques of landscape representations can be used in order to facilitate the expression of landscape preferences and aspirations. By revisiting the main methodologies and results obtained in these projects, the chapter builds a functional typology of representation techniques for supporting landscape mediation. This typology is based on a series of distinctions: visual and literary media; descriptive, analytic and synthetic techniques; and views ‘from the top’ and ‘from the inside’. The final part of the chapter is devoted to a general discussion of two main topics: the opposition between geo-referenced and ego-referenced space, and the question of the visualization of cultural landscapes.