Ball in the Concert Hall of the Winter Palace

Ball in the Concert Hall of the Winter Palace during the Official Visit of Nasir al-Din Shah,
in May 1873 (1874). Mihály Zichy.
Via Books and Art

Before I even knew the name of this piece, I flashed on Russian Ark, a most unusual film which I didn't know enough Russian history to fully understand. I still found it fascinating and obviously they did a good enough job to make me instantly connect it with this art from that time period.