When the historic building of the Polytechnic Museum closed for reconstruction, a part of the museum moved to VDNKh. The exposition at VDNKh is entitled Russia Does It On Its Own, displaying achievements of Russian scientific thought. Among the exhibits are the radio receiver that belonged to Alexander Popov, the inventor of radio, Konstantin Tsiolkovsky's rocket plane, Vladimir Lukianov's hydro-integrator (water computer), and other amazing inventions, as well as a video course on the invention of the atomic bomb. Exhibitions are held here from time to time, for example, Inventing the Bicycle, or 100 Gadgets that Changed the World. Tour guides are available, and scientific master classes are held periodically at the VDNKh pavilion.