Panelház (Short: panel) is a Hungarian term for a type of concrete block of flats (panel buildings), built in the People's Republic of Hungary and other Eastern Bloc countries. It was the main urban housing type in the Socialist-era, which still dominates the Hungarian cityscape. According to the 2011 census, there were 829,177 panel apartments in Hungary (18.9% of the dwellings) that were home to 1,741,577 people (17.5% of the total population). Panelház are not the only type of block of flats in Hungary; as of 2014, 31.6% of Hungarians lived in flats (according to data from Eurostat). History After World War II a serious housing crisis developed in Hungary due to rapid population growth and urbanization. The exodus of the rural population after the collectivization in the late 1940s and the early 1950s from rural areas was particularly important as a source of migration. Budapest and other cities became overcrowded, and the Communist government eventually responded. After several study visits and conventions, in the early 1960s Hungary bought the large-panel system (LPS) from the Soviet Union and Denmark. The Danish technology was known as Larsen-Nielsen system and was a common housing method in Western Europe, Turkey, and Hong Kong. By the late 1960s, Hungarian engineers developed the country's own large-panel system (mostly based on the Soviet LPS), adapted to the Hungarian situation. The large-panel system permitted rapid construction that was not constrained by Hungary's relatively cold winters. After the 1968 Ronan Point explosion (a Larsen-Nielsen-type tower block partially collapsed in London) Hungarian engineers modified the original system, made the structure more compact and the joints stronger. The Larsen-Nielsen system was retired in Hungary in 1970. The first, experimental panel residential building was built in Dunaújváros (new industrial city) in 1961, followed by other blocks in Pécs and Debrecen in 1963. The first precast concrete panel work was finished in 1962 in Dunaújváros, while the first large-panel system (LPS) housing factory (these works produced near all parts of these buildings, including the built-up kitchen units and the built-up wardrobes), was built in 1965 in Óbuda, Budapest. The first LPS building also was built in Óbuda in 1965. The structure of Hungarian cities in the immediate post-war period consisted of a historic core surrounded by mostly single-story buildings and workers' houses, predominantly on unpaved streets. The nationwide public housing program of the 1960s changed this. The Communist government demolished the single-story