 In order to protect cultural artefacts, the historic art bunker was built below Nuremberg Castle.In the closing stages of the Second World War, at the end of March and April 1945, Franconian towns and cities were captured by formations of the US Army who advanced from the west after the failure of the Battle of the Bulge and Operation Nordwind.The Battle of Nuremberg lasted five days and resulted in at least 901 deaths.