You might want to spend some time browsing the exhibits at East Siberian Soil Science Museum, Sukachev Fine Arts Museum, or Baikal Museum. Volkonsky House Museum, 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 Irkutsk Academic Drama Theater if you're interested in local theater.