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