They say that somwhere there Nazis had hid the gold robbed other nations.
„Riese [ˈʁiːzə] (German for „giant”) is the code name for the construction project of Nazi Germany, started, and left unfinished, in the Owl Mountainsand Książ Castle in 1943-45. It consists of seven complexes of the underground military facilities located in Lower Silesia, previously Germany, now territory of Poland. ” (source, http://en.wikipedia.org/wiki/Project_Riese)