The World of Yesterday but hated politics and shunned political engagement. His autobiography shows some reluctance to analyse Nazism as a political ideology; he tended simply to regard it as the rule of one particularly evil man, Hitler. Zweig was struck that the "Berghof", Hitler's mountain residence in Berchtesgaden, was just across the valley from his own house outside Salzburg. Berchtesgaden was an area of early Nazi activity. Zweig believed strongly in Europeanism against nationalism. Zweig also describes his passion for collecting manuscripts, mostly literary and musical. Zweig collaborated in the early 1930s with composer Richard Strauss on the opera "Die schweigsame Frau", which
Berchtesgaden National Park (). The Watzmann is the third highest mountain massif in Germany. The Watzmann Glacier, located below the eastern face of the Watzmann, and the Blaueis, adjacent to the Hochkalter, are two of the five glaciers in Germany. The first nature conservation area in the Berchtesgaden Alps was created in what is currently the southeastern part of the park in 1910. It had an area of and was organized according to the model of National Parks in the United States. In 1919, the mountain hotel of St. Bartolomew was built. In March 1921, the area was expanded to . At the