 Numerous old wooden buildings from villages in the Angara valley, which have been flooded after the construction of the Bratsk Dam and Ust-Ilimsk Dam, have been transported to the museum and reassembled there.One of the centerpieces of the collection is a partial recreation of the 17th-century "ostrog" (fortress) of Ilimsk, which consists of the original Spasskaya Tower and the Church of Our Lady of Kazan transported from the flooded "ostrog" in the mid-1970s, to which an exact modern copy of another tower of the "ostrog" and the Southern wall of the fortress were added in the early 2000s.The Botanic Garden of the Irkutsk State University known as the "Irkutsk Botanic Garden" is the only botanic garden as a living museum in Irkutsk Oblast and Baikalian Siberia.