The so-called Edict of Milan of 313, actually a fragment of a letter from Licinius to the governors of the eastern provinces, granted freedom of worship to everyone, including Christians, and ordered the restoration of confiscated church properties upon petition to the newly created vicars of dioceses.  Chronic congestion caused by cars during the 1970s and 1980s led to restrictions being placed on vehicle access to the inner city-centre during the hours of daylight.  During the reign of Nero, two thirds of the city was ruined after the Great Fire of Rome, and the persecution of Christians commenced. After the fall of Napoleon, the Papal States were reconstituted by a decision of the Congress of Vienna of 1814. The second-largest station in the city, Roma Tiburtina, has been redeveloped as a high-speed rail terminus. The city's urban area is cut in two by its ring-road, the Grande Raccordo Anulare ("GRA"), finished in 1962, which circles the city centre at a distance of about 10 km (6 mi). Snowfall is rare but not unheard of, with light snow or flurries occurring on some winters, generally without accumulation, and major snowfalls on a very rare occurrence (the most recent ones were in 2018, 2012 and 1986).
 The city was ranked in 2014 as 32nd in the Global Cities Index, the highest in Italy.
Rome first became a major artistic centre during ancient Rome, with forms of important Roman art such as architecture, painting, sculpture and mosaic work. This underground network is generally reliable (although it may become very congested at peak times and during events, especially the A line) as it is relatively short. There was the so-called Gallic Empire from 260 to 274 and the revolts of Zenobia and her father from the mid-260s which sought to fend off Persian incursions. municipio) (until 2001 named circoscrizioni). Rome is home to local rugby union teams such as Rugby Roma (founded in 1930 and winner of five Italian championships, the latter in 1999–2000), Unione Rugby Capitolina and S.S. Lazio 1927 (rugby union branch of the multisport club S.S. Lazio).
, Beginning with the Council of Trent in 1545, the Church began the Counter-Reformation in response to the Reformation, a large-scale questioning of the Church's authority on spiritual matters and governmental affairs. The bus, tram, metro and urban railways network is run by Atac S.p.A. (which originally stood for the Municipal Bus and Tramways Company, Azienda Tramvie e Autobus del Comune in Italian).
In the warmest month, August, the average temperature is 31.7 °C (89.1 °F) during the day and 17.3 °C (63.1 °F) at night. Presente il dg Baldissoni, L'AS Roma parteciperà alla Serie A femminile a partire dal 2018-19, Nella prossima stagione anche l'A.S.
The event never took place because of war, but the area was later partly redesigned and renamed EUR (Esposizione Universale di Roma: Rome Universal Exhibition) in the 1950s to serve as a modern business district.
There is also a notable pine wood at Castelfusano, near Ostia. Although not as important as Milan, Rome is the fourth most important centre for fashion in the world, according to the 2009 Global Language Monitor after Milan, New York, and Paris, and beating London.