regions in Ukraine had their own distinctive style of vernacular architecture. For example, in the Carpathian Mountains and the surrounding foothills, wood and clay are the primary traditional building materials. The Museum of Folk Architecture and Way of Life of Central Naddnipryanshchyna is located in Pereiaslav. The open-air museum contains 13 theme museums, 122 examples of national architecture, and over 30,000 historical cultural objects. The Museum of Decorative Finishes is one of the featured museums that preserves the handiwork of decorative architectural applications in Ukrainian architecture. Galicia Wooden churches in Western Ukraine Architecture of late 19th and early 20th centuries Eastern Ukraine Ginzburg House House with Chimaeras Russo-Byzantium in Ukraine (St Volodymyr's Cathedral) Western Ukraine Historic Centre of Lviv - UNESCO World Heritage Site Chernivtsi University - UNESCO World Heritage Site Lviv Rail Terminal Soviet Union After the October Revolution and the Russian Civil War that Ukraine was also involved in, most of the Ukrainian territory was incorporated into the new Communist Ukrainian SSR. For the first time, Ukrainians, as a nation became a recognized nationality, and as a result great efforts were undertaken to develop a separate Ukrainian architectural style. Capital: Kharkiv (1917–1934) During the early years of the Soviet rule, the Ukrainization policies, meant that many Ukrainian architects were encouraged to use national motives unique to Ukraine. At the same time, architecture became standardised, all cities received general development plans to which they would be built. The national motives were, however, not taken up as the new architectural fashion for the new government became Constructivism. In Soviet Ukraine, for the first 15 years, the capital was the eastern city of Kharkiv. Immediately a major project was developed to "destroy" its burgious-capitalist face and create a new Socialist one. A talented young architect Viktor Trotsenko, proposed a large central square with large modern buildings to become the central hub of the capital. Thus the Dzerzhinsky Square (now Freedom Square) was born, which would become the most brilliant example of constructivist architecture in the USSR and abroad. Enclosing a total of 11.6 ha, it is currently the third largest square in the world to date. Of all, the most famous was the massive Gosprom building (1925–1928), which would become a symbol of not only Kharkiv, but Constructivism in general. Built by architects Sergei Serafimov, S. Kravets and M. Felger, and only in three years it would become the highest structure