Built on sand on around the banks of the river Spree, Berlin has been one of Europe's most influential economic, cultural and political centres - for better or worse - since it's origins as a trading post in the 13th century. It was capital of both the Prussian and the German Empire until World War I uprooted the Hohenzollern dynasty, which had ruled since the 15th Century. After the War the Weimer Republic was established and Berlin enjoyed a period of unprecedented prosperity and creativity - known as the 'Golden Twenties'. In the 30s however the German economy was collapsing and a accumulation of socio-political reasons saw Hitler and the Nazi party seize power. Berlin became the centre of one of the most infamous regimes in history, and remained so until 1945 when it was liberated by the Red Army. Unfortunately liberation was a painful process. The Russians, who has lost close to 30 million people in the conflict, exacted a heavy revenge on the citizens of Berli...