Reunification has created urban and architectural problems concerning the nature of Germany and its past. This conference concentrates upon two acute aspects of this situation - the urban centre of Berlin and the continuing controversies about the representation of the Holocaust.Eyal Weizman presents a project for the Memorial Site for the Lindenstrasse synagogue in Berlin (designed by Weizman in collaboration with the architect Zvi Hecker and the artist Micha Ullman).Stefanie and Philip Oswalt - Representing the Unrepresentable: Developing the Memorial Site of the former Women's Concentration Camp at Ravensbrck. Manuel Herz presents a project for a Jewish Community Centre in Mainz.