Vienna is the capital city, as well as the largest in Austria. It is a demonically aligned Capital that orchestrates the otherwise militarized parts of Aurstria.
Vienna is one of the largest Demon-run cities in Austria. Before it's control of The Seven Hells, Austria was a beautiful city that focused on religion, art, and welfare. Now it is a harsh city with demons that practice the ways of The Seven Hells. Most of the strongest demons in Vienna are recruited to an army-like mass that is trained to fight against France (The Order's Capital) in war.