Was work carried out here on a German atomic bomb – Hitler’s wonder weapon? Was an underground city being prepared to shelter the highest authorities of the Third Reich? Are Nazi treasures hidden in undiscovered tunnels? The audio guide that takes you around the Osówka Underground City answers all these questions.The complex is located in Głuszyca near Wałbrzych, in the Owl Mountains. During the Second World War, the Germans built an underground military facility here using the slave labour of prisoners; its purpose has not been explained to this day. The audio guide presents all the main hypotheses about why Osówka was built, and also shows the main chambers and the exhibits collected in them, mostly military items.