Raumortlabor Hombroich is a visionary urban planning project designed for a site near the Stiftung Insel Hombroich. Since 2002, the ROL project has been dedicated to the experiment of different communal life forms, most of which provide their own energy and food. First results for the architectural planning of the sections were planned by 14 internationally renowned artists and architects, exhibited at the Architecture Biennale in Venice and the AIA Center for Architecture in New York, as well as in Hombroich and in Cologne. The project Raumortlabor is introduced in its conception in the book catalogue »Rundbau in Hombroich«, the manifestation as well, as the architectural designs are included in the catalogues of Raumortlabor and were presented in the exhibition at the Biennale in Venice. The whole project has been presented in an exhibition and a symposia at the Museum Ludwig in Cologne during the architectural event Plan08, here introduced in an exhibition catalogue, invitation and exhibition views.