The use of reinforced concrete in the works of architecture in the twentieth century, has had to deal with the events that have come and gone during this period, and especially following the two world wars in Europe, it has become an interpreter the most extensive reconstruction of the history of the old continent has ever known. The emblematic story of the reconstruction of the units of the Cathedral of Reims, as a result of the bombing in 1914, then scored, officially the use of this material is considered useful only for the types of settlement of industrial works or civil use, even for places of worship, regarded for the history of mankind, monuments par excellence. In addition, at the initiative of Auguste Perret, were designed and built churches in which the material of modernity was truly exposed to view, and so, accepted, even in traditional environments suspicious, prone to encouraging the use of stylistic features of previous centuries. The Second World War has fully liberalized the use of concrete thus changing, even in sacred spaces, a number of aesthetic balance and developing a new conception of the forms and images of architecture that, in turn, have also been contributed by the changes introduced in the liturgy of the Second Vatican Council held in Rome between 1962 and 1968. In Italy traditional postwar similar experience was also a revolution in the conception of the idea of Monument.