Locations?
In the included behind the scenes extra there are mention of two important Vienna locations (coronation scene, and Ball Scene). But the current locations currently mention only some Salzberg, Austria locations.
shareThe Ball Scene was filmed in the Schönbrunn Palace in Vienna.
https://en.wikipedia.org/wiki/Sch%C3%B6nbrunn_Palace
(EDIT: See below. The above is NOT correct.)
(this is supposedly inside the Prince's palace. The exteriors were filmed at Schloss Klessheim in Salzburg, Austria.)
Salzburg Cathedral was used for the exteriors of the coronation. I suspect it was used for the interiors as well, but am not sure.
http://leslie-special.info In appreciation of The Great Race.
Update on the cathedral interiors.
I have now seen some good images of the interior of the Salzburg Cathedral
(e.g. https://goo.gl/maps/dK1Cu6vqeh32 )
and it's plainly NOT what was used for the crowning ceremony in the film.
http://leslie-special.info In appreciation of The Great Race.
Found it!
The interior scene for the coronation is Karlskirche in Vienna. https://en.wikipedia.org/wiki/Karlskirche
See: https://goo.gl/maps/BTpNA9YhriR2
The altar area and the organ loft over the entrance are distinctive.
http://leslie-special.info In appreciation of The Great Race.
Despite what is stated on many web pages, it appears that filming was NOT done at Schönbrunn Palace.
That was the "Summer Residence" of the Hofburg dynasty, and the ballroom scenes were actually filmed in the Imperial Palace, which was their "Winter Residence".
The main ballroom scenes are in the "Zeremoniensaal" (Ceremonial Hall), in what is now the Hofburg Congress Centre.
Prince Hapnick enters along the "Seitengalerie", and at the end of the scene, Hapnick and Leslie exit via the "Marmorsaal" room.
http://www.hofburg.com/jart/prj3/hofburg/main.jart?content-id=1380097681223&rel=en
http://leslie-special.info In appreciation of The Great Race.