Lilian Harvey played Christel in the English, French and German versions of this film. Conrad Veidt played Metternich in the simultaneously filmed English-language version of "Der Kongress tanzt." called "Congress Dances". Pierre Magnier assumed the role in the French version. Lil Dagover, Veidt's co-star in "The Cabinet of Dr, Caligari," played the countess in all three versions.
Posthumously listed as one of Akira Kurosawa's 100 favorite films.
This film's song 'das gibt's nur einmal, das kommt nicht wieder', can also be heard in Miyazaki's The Wind Rises (2013).