As part of his esoteric, ephemeral character, Willy Wonka speaks in multiple languages throughout the film -- some bona fide and some contrived. After riding through a tunnel filled with frightening, psychadelic imagery projected on its walls, the factory visitors come upon Wonka's greatest secret: his Inventing Room. While most of his multi-lingual musings are irrelevant, Wonka's speech outside the Inventing Room is far from meaningless.
As the passengers step off the boat, Wonka speaks in flawless German, saying, Meine Herrschaften, schenken Sie mir ihre Aufmerksamkeit. Sie kommen jetzt in den interessantesten und gleichzeitig geheimsten Raum meiner Fabrik. Meine Damen und Herren, der "Inventing Room." Translated, his text reads, "My friends, please give me your attention. You have now come to the the most interesting and, at the same time, the most secret room of my entire factory. Ladies and Gentlemen, The Inventing Room."
Viewers should note the extended shot of the sign outside the inventing room for clues to this otherwise obscure scene. The "DANGER KEEP OUT" marking is reminiscent of the signs outside of World War II concentration camps in Germany, and equally as eerie when juxtaposed with Wonka's warning, spoken in German. 1970's viewers were not yet too far removed from the Holocaust to recognize the symbolism in this scene and the curious message it implies.