Rome is the capital city of Italy and Lazio, and is Italy's largest and most populous city, with 2,726,539 residents in an urban area of some 1,285.5 km2 (496.3 sq mi).It is located in the central-western portion of the Italian Peninsula, on the Tiber river.

Rome's history as a city spans over two and a half thousand years, as one of the founding cities of Western Civilisation. It was the centre of the Roman Empire, which dominated Europe, North Africa and the Middle East for four hundred years from the 1st Century BC till the 4th Century AD. Rome has a significant place in the story of Christianity up to the present day as the home of the Roman Catholic Church and the site of the Vatican City, an independent city-state run by the Catholic Church within as an enclave of Rome.

As one of the few major European cities that escaped World War II relatively unscathed, central Rome remains essentially Renaissance and Baroque in character. Rome is the third-most-visited tourist destination in the European Union, and its historic centre is listed by UNESCO as a World Heritage Site. As a modern city it has been capital of the unified Italy since 1870, and grew mainly in two periods either side of Word War II.

Ancient Rome

The PantheonOne of the symbols of Rome is the Colosseum (70–80 AD), the largest amphitheatre ever built in the Roman Empire. Originally capable of seating 60,000 spectators, it was used for gladiatorial combat. A list of important monuments of ancient Rome includes the Roman Forum, the Domus Aurea, the Pantheon, Trajan's Column, Trajan's Market, the Catacombs, the Circus Maximus, the Baths of Caracalla, Castel Sant'Angelo, the Mausoleum of Augustus, the Ara Pacis, the Arch of Constantine, the Pyramid of Cestius, and the Bocca della Verità.

Medieval architecture

Santa Maria in TrastevereOften overlooked, Rome's medieval heritage is one of the largest in Italian cities. Basilicas dating from the Paleochristian age include Santa Maria Maggiore and San Paolo Fuori le Mura (the latter largely rebuilt in the 19th century), both housing precious 4th century AD mosaics. Later notable medieval mosaic and fresco art can be also found in the churches of Santa Maria in Trastevere, Santi Quattro Coronati, and Santa Prassede. Lay buildings include a number of towers, the largest being the Torre delle Milizie and the Torre dei Conti, both next the Roman Forum, and the huge staircase leading to the basilica of Santa Maria in Ara Coeli.

Renaissance architecture and Baroque architecture

The Trevi FountainRome was a major world centre of the Renaissance, second only to Florence, and was profoundly affected by the movement. The most impressive masterpiece of Renaissance architecture in Rome is the Piazza del Campidoglio by Michelangelo, along with the Palazzo Senatorio, seat of the city government. During this period, the great aristocratic families of Rome used to build opulent dwellings as the Palazzo del Quirinale (now seat of the President of the Italian Republic), the Palazzo Venezia, the Palazzo Farnese, the Palazzo Barberini, the Palazzo Chigi (now seat of the Italian Prime Minister), the Palazzo Spada, the Palazzo della Cancelleria, and the Villa Farnesina.

Rome is also famous for her huge and majestic squares (often adorned with obelisks), many of which were built in the 17th century. The principal squares are Piazza Navona, Piazza di Spagna, Campo de' Fiori, Piazza Venezia, Piazza Farnese and Piazza della Minerva. One of the most emblematic examples of Baroque art is the Fontana di Trevi by Nicola Salvi. Other notable 17th-century baroque palaces are the Palazzo Madama, now the seat of the Italian Senate and the Palazzo Montecitorio, now the seat of the Chamber of Deputies of Italy.

Neoclassicism

In 1870, Rome became the capital city of the new Kingdom of Italy. During this time, neoclassicism, a building style influenced by the architecture of antiquity, became a predominant influence in Roman architecture. During this period, many great palaces in neoclassical styles were built to host ministries, embassies, and other governing agencies. One of the best-known symbols of Roman neoclassicism is the Monument of Vittorio Emanuele II or "Altar of the Fatherland", where the Grave of the Unknown Soldier, that represents the 650,000 Italians that fell in World War I, is located.

Fascist architecture

The Fascist regime that ruled in Italy between 1922 and 1943 developed an architectural style that was characterised by its links with ancient Roman architecture. The most important Fascist site in Rome is the E.U.R district, designed in 1938 by Marcello Piacentini. It was originally conceived for the 1942 world exhibition, and was called "E.42" ("Esposizione 42"). The world exhibition, however, never took place because Italy entered the Second World War in 1940. The most representative building of the Fascist style at E.U.R. is the Palazzo della Civiltà Italiana (1938–1943), the iconic design of which has been labelled the cubic or Square Colosseum.

Galleria BorgheseAfter World War II, 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 Défense in Paris). Also the Palazzo della Farnesina, the current seat of Italian Foreign Ministry, was designed in 1935 in Fascist style.

Parks and gardens

Public parks and nature reserves cover a large area in Rome, and the city has one of the largest areas of green space amongst European capitals.The most notable part of this green space is represented by the large number of villas and landscaped gardens created by the Italian aristocracy. While many villas were destroyed during the building boom of the late 19th century, a great many remain. The most notable of these are Villa Borghese, Villa Ada, and Villa Doria Pamphili.

Rome has a number of regional parks of much more recent origin including the Pineto Regional Park and the Appian Way Regional Park. There are also nature reserves at Marcigliana and at Tenuta di Castelporziano