Barracks are specialized buildings for permanent military accommodation; the word may apply to separate housing blocks or to complete complexes. Their main object is to separate soldiers from the civilian population and reinforce discipline, training and esprit de corps. They were sometimes called discipline factories for soldiers. Like industrial factories, some are considered to be shoddy or dull buildings, although others are known for their magnificent architecture such as Collins Barracks in Dublin and others in Paris, Berlin, Madrid, Vienna or London.