What did Austria gain at the congress of Vienna?

* Lombardy-Venetia: Austria regained control of the Lombardo-Venetian Kingdom, which it had lost to France during the Napoleonic Wars.

* Venetia: Austria regained control of the Venetian territories that had been lost to France during the Napoleonic Wars.

* Trentino: Austria regained control of the Trentino region, which had been lost to France during the Napoleonic Wars.

* South Tyrol: Austria regained control of the South Tyrol region, which had been lost to France during the Napoleonic Wars.

* Vorarlberg: Austria regained control of the Vorarlberg region, which had been lost to France during the Napoleonic Wars.