The Nature Museum is located in the wing of the main building, which previously belonged to merchant G.V. Usov. The museum's exhibition introduces visitors to the flora and fauna of the Russian North. In the interactive section of the exhibition titled "Living Past of the Earth," guests can assemble a model of a pareiasaur skeleton, complete puzzles to learn what a dicynodont looked like, and play with blocks to discover which animals lived during the Ice Age. Here, one can also try their hand at paleontological excavations, uncovering a mammoth tooth, a bone from an Ice Age animal, and various fossils.