Hi Laurentius,
[b]The backstage tours to Mariinsky Theatre are not promoted online, but can be arranged in St. Petersburg.
Tours vary depending on shows and available areas to see.
You may see the props, costume areas, set-design area above the theater, rehearsal rooms.
Sometimes you can see classes being held or hear performers warming up.
A 90-minute backstage tour of the Mariinsky costs about $225 USD each person.[/b]
See you there!