 Reconstruction started in the rural areas because still at that time two-thirds of the population lived there.But reconstruction involved not only the repair of war damage (e.g., the destruction of the city of Rovaniemi by the retreating German army) but also the beginnings of greater urbanisation, programmes for standardised housing, building programmes for schools, hospitals, universities and other public service buildings, as well as the construction of new industries and power stations.For instance, architect Aarne Ervi was responsible for the design of five power stations along the Oulujoki river in the decade after the war, and Alvar Aalto designed several industrial complexes following the war, though in fact he had been heavily involved in designing projects of various sizes for Finnish industrial enterprises already since the 1930s.