Documentary series in which Dan Cruickshank travels the world in search of man's greatest creations. Dan's penultimate journey takes him above Turkey in a hot air balloon. He moves on to Russia's St Petersburg before heading towards the Arctic Circle and the remote monastery of Solovki. He then takes a personal journey back to Poland, where he grew up, before moving on to Berlin, where he determines he must salvage something from the wreckage of Nazi Germany.