Nazis hoard of looted art treasures uncovered austrian castle US 7th army troops have found a priceless collection of looted art treasures hidden in neuschwanstein castle. A complete filing system proves that billions of pounds worth of pictures, jewellery, etc had been stolen by the Nazis from private collections throughout Europe. Letters from Goering were found to Alfred Rosenberg to hurry with the collections of fine arts from France. US art experts have started the surveys. Lt James Rorimer - curator of Fine Arts at the Metropolitan Museum examines 16th century italian jewellery from the Rothschild collection stolen from paris.