A new face is being fashioned for the capital of revived German unity. Now emerging are the promised landmarks of a world metropolis, a European beacon of the next century. Yet those who study the foundations closely know the new buildings occupy deeply sensitive territory. The new chancellor's residence and restored parliament building - the Reichstag - stand in the space once intended for the capital of Hitler's
1,000-year Germania. In the east of the city, proposals to rebuild
Prussian monuments compete for space with relics of East German communism. And visible amid the frenetic new construction are traces of the Jewish presence that marked Berlin so strongly until the 1930s. Chris Bowlby explores above and below the new Berlin to see how architecture is attempting to mediate between an optimistic future and a terrible past. Repeat