The Salzkammergut is a resort area located in Austria. It stretches from the City of Salzburg eastwards along the Austrian Alpine Foreland and the Northern Limestone Alps to the peaks of the Dachstein Mountains, spanning the federal states of Upper Austria, Salzburg, and Styria. The main river of the region is the Traun, a right tributary of the Danube. The name Salzkammergut literally means "Estate of the Salt Chamber" and derives from the Imperial Salt Chamber, the authority charged with running the precious salt mines of the Habsburg Monarchy. It is a UNESCO World Heritage Site.