After World War II, the city was subject to industrialization, like many other cities and towns in the country. The most important factories were the Ikarus bus factory, the Videoton radio and TV factory, and the Könnyűfémmű (colloquially Köfém) aluminium processing plant, since acquired by Alcoa. By the 1970s, Székesfehérvár had swelled to more than 100,000 inhabitants (in 1945 it had only about 35,000). Several housing estates were built, but the city centre preserved its Baroque atmosphere. The most important Baroque buildings are the cathedral, the episcopal palace and the city hall.