the new Kingdom of Italy. During this time, neoclassicism, a building style influenced by the architecture of antiquity, became the predominant influence in Roman architecture. During this period, many great palaces in neoclassical styles were built to host ministries, embassies, and other government agencies. One of the best-known symbols of Roman neoclassicism is the Monument to Vittorio Emanuele II or "Altar of the Fatherland", where the Grave of the Unknown Soldier, who represents the 650,000 Italian soldiers who died in World War I, is located. Fascist architecture The Fascist regime that ruled in Italy between 1922 and 1943 had its showcase in Rome. Mussolini ordered the construction of new roads and piazzas, resulting in the destruction of older roads, houses, churches and palaces erected during papal rule. The main activities during his government were: the "isolation" of the Capitoline Hill; Via dei Monti, later renamed Via del'Impero, and finally Via dei Fori Imperiali; Via del Mare, later renamed Via del Teatro di Marcello; the "isolation" of the Mausoleum of Augustus, with the erection of Piazza Augusto Imperatore; and Via della Conciliazione. Architecturally, Italian Fascism favoured the most modern movements, such as Rationalism. Parallel to this, in the 1920s another style emerged, named "Stile Novecento", characterised by its links with ancient Roman architecture. Two important complexes in the latter style are the Foro Mussolini, now Foro Italico, by Enrico Del Debbio, and the Città universitaria ("University city"), by Marcello Piacentini, also author of the controversial destruction of part of the Borgo rione to open Via della Conciliazione. The most important Fascist site in Rome is the EUR district, designed in 1938 by Piacentini. This new quarter emerged as a compromise between Rationalist and Novecento architects, the former being led by Giuseppe Pagano. The EUR was originally conceived for the 1942 world exhibition, and was called "E.42" ("Esposizione 42"). The most representative buildings of EUR are the Palazzo della Civiltà Italiana (1938–1943), and the Palazzo dei Congressi, examples of the Rationalist style. The world exhibition never took place, because Italy entered the Second World War in 1940, and the buildings were partly destroyed in 1943 in fighting between the Italian and German armies and later abandoned. The quarter was restored in the 1950s when the Roman authorities found that they already had the seed of an off-centre business district of the type that other capitals were still planning (London Docklands and La