Vorarlberg

Vorarlberg is the westernmost state (Land) of Austria. Though it is the second smallest in terms of area (Vienna is the smallest), it borders three countries:
Germany (Bavaria and Baden-Württemberg)
Switzerland (Graubünden and St. Gallen)
Liechtenstein,

as well as the Austrian state of Tyrol. Due to their isolated location from the rest of Austria, the people in Vorarlberg speak a very distinct German dialect which other Austrians have a hard time understanding. It is in some way similar to the German dialects spoken in Switzerland, Baden-Württemberg and the Alsace region in France (they are all Alemannic dialects, whereas the dialects in the rest of Austria form part of the Bavarian-Austrian language group). In fact many towns or even villages in Voralberg have their own distinct sub-dialects. There are approximately 352,000 inhabitants in Vorarlberg’s 96 municipalities.