Vorarlberg not Austro-Bavarian, but rather an Alemannic dialect; it therefore has much more in common culturally with its (historically) Alemannic-speaking German-speaking Switzerland, Liechtenstein, Swabia and Alsace than with rest of Austria, southeastern Bavaria, and South Tyrol. Vorarlberg is almost completely mountainous and has been nicknamed the ‘Ländle’ meaning ‘small land’. The main rivers in Vorarlberg are the Ill (running through the Montafon and Walgau valleys into the Rhine), the Rhine (forming the border with Switzerland), the Bregenzer Ache and the Dornbirner Ach. One of the shortest rivers is the Galina. Important lakes, apart from Lake Constance are Lüner Lake, Silvretta Lake,
Vorarlberg the Swiss French in the 19th century by invitation during the days of the Austro-Hungarian Empire. There has been a sizable minority of Turkish descent since the 1960s. 78% of the population are Roman Catholic, which puts Vorarlberg in line with the national Austrian average of 73.6%. The second-largest denomination, with a share of 8.4%, is Islam, mostly Turks. 7,817 (or 2.2%) of Vorarlberg's inhabitants are Protestants. For several years, the Vorarlberg economy has been performing well above the Austrian average. While the overall Austrian GDP in 2004 rose by 2.0% in real terms, Vorarlberg recorded an increase of 2.9%.