You might want to spend some time browsing the exhibits at Baikal Museum, Volkonsky House Museum, or Geological Museum. Irkutsk Academic Drama Theater, Irkutsk Regional Memorial Decembrists Museum, Trubetskoy House, and Irkutsk Regional Memorial Decembrists Museum, Volkonsky House are landmarks that you won't want to miss. You can watch performances at Irkutsk Musical Theater, Okhlopkov Drama Theater, and Aistenok Irkutsk Regional Puppet Theater if you're interested in local theater.