If you want to add some extra culture to your trip, put Municipal Museum of Theatrical Arts on your itinerary. See if guided tours are available or just roam around at your own pace.
You'll find this museum in Omsk. Once you've done everything you want to at Municipal Museum of Theatrical Arts, head to nearby Omsk Museum Kondrati Belova, Continent Shopping Center and Omsk State Dostoevsky Literary Museum.