Routing by Landmarks Urs-Jakob Rüetschi, University of Zurich David Caduff, University of Zurich Frank Schulz, University of Karlsruhe Alexander Wolff, University of Karlsruhe Sabine Timpf, University of Zurich Conference paper STRC 2006 STRC 6 th Swiss Transport Research Conference Monte Verità / Ascona, March 15. – 17. 2006