European watershed area of the Rhine, which empties into the North Sea via the Netherlands, and the Danube, which flows eastward emptying into the Black Sea. It enters Austria at Piz Buin in the Silvretta Alps running along the Arlberg massif and forming the border between the states of Tyrol and Vorarlberg. It reaches Bavaria, Germany via the crest of the Allgäu Alps and leaves the High Alps at the Adelegg range near Kempten. Within the Alpine foothills it runs north of the Schussen catchment area of Lake Constance towards the sources of the Brigach and Breg headwaters of the Danube in
Vorarlberg with the "Neue Vorarlberger Bauschule" (literally: "new Vorarlberg building school"). The Vorarlberg school evolved organically the second half of the 20th century, always involving craftsmen and locals in the building process. Today, it is regarded as one of the most important pioneers of the New Alpine architecture. With the typical architecture of Vorarlberg still recognizable, it combines tradition and modernity: clean lines, glass and local wood. Its harmonious mix creates interesting contrasts as in half-timbered houses. Comfort and quality of life are important criteria. Currently, many private houses and public buildings are renovated by architects, favoring local timber and limiting