I am not sure if this the right thread to post this but the ballett scenes of this year's New Year Concert were filmed in the Princely Town Palais Liechtenstein
in Vienna which is still in possession of Prince Hans-Adam II. of Liechtenstein.
So if anybody is interested in the interior of the Palais you can see (at least a little bit of) it's splendor here on youtube.
1.) Waltz by Joseph Lanner - The Romantics
2.) Pizzicati by Leo Delibes - Sylvia
A side note: The spectacular costumes of the dancers were made by Vivienne Westwood.