Metropolitan City of Rome Capital in the context of "Grottaferrata"

Rome is the capital city and most populated comune (municipality) of Italy. It is also the administrative centre of the Lazio region and of the Metropolitan City of Rome. A special comune named Roma Capitale with 2,746,984 residents in 1,287.36 km (497.1 sq mi), Rome is the third most populous city in the European Union by population within city limits. The Metropolitan City of Rome Capital, with a population of 4,223,885 residents, is the most populous metropolitan city in Italy. Its metropolitan area is the third-most populous within Italy. Rome is located in the central-western portion of the Italian Peninsula, within Lazio (Latium), along the shores of the Tiber Valley. Vatican City (the smallest country in the world and headquarters of the worldwide Catholic Church under the governance of the Holy See) is an independent country inside the city boundaries of Rome, the only existing example of a country within a city. Rome is often referred to as the City of Seven Hills due to its geography, and also as the "Eternal City". Rome is generally considered to be one of the cradles of Western civilization and Western Christian culture, and the centre of the Catholic Church.

Rome's history spans 28 centuries. While Roman mythology dates the founding of Rome at around 753 BC, the site has been inhabited for much longer, making it a major human settlement for over three millennia and one of the oldest continuously occupied cities in Europe. The city's early population originated from a mix of Latins, Etruscans, and Sabines. Eventually, the city successively became the capital of the Roman Kingdom, the Roman Republic and the Roman Empire, and is regarded by many as the first-ever Imperial city and metropolis. It was first called The Eternal City (Latin: Urbs Aeterna; Italian: La Città Eterna) by the Roman poet Tibullus in the 1st century BC, and the expression was also taken up by Ovid, Virgil, and Livy. Rome is also called Caput Mundi (Capital of the World).

The Rome metropolitan area is a statistical area that is centred on the city of Rome, Italy. It consists of a part of the Metropolitan City of Rome Capital (formerly known as the Province of Rome) and a single comune, Aprilia, in the neighbouring Province of Latina. Both provinces are part of the region of Lazio. The metropolitan area does not have any administrative designation or function unlike the Metropolitan City of Rome Capital.

Fiumicino (Italian: [fjumiˈtʃiːno]) is a town and comune in the Metropolitan City of Rome, Lazio, central Italy, with a population of 80,500 (2019). It is known for being the site of Leonardo da Vinci–Fiumicino Airport, the busiest airport in Italy and the eighth-busiest in Europe, which serves Rome and much of central Italy.

Ardea (Ancient Greek: Ἀρδέα) is an ancient town and comune (municipality) in the Metropolitan City of Rome Capital, 35 kilometres (22 miles) south of the city centre of Rome and about 4 kilometres (2 miles) from today's Mediterranean coast.

The economy is mostly based on agriculture, although, starting from the 1970s, industry has played an increasingly important role.

The Metropolitan City of Milan (Italian: città metropolitana di Milano; Milanese: cittaa metropolitana de Milan, Lombard: [tʃiˈtaː metrupuliˈtana de miˈlãː]) is a metropolitan city (not to be confused with the metropolitan area) in the Lombardy region of Italy. It is the second most populous metropolitan city in the nation after the Metropolitan City of Rome Capital. Its capital is the city of Milan. It replaced the province of Milan and includes the city of Milan and 132 other comuni (sg.: comune). It was first created by the reform of local authorities (Law 142/1990) and then established by the Law 56/2014. It has been operative since 1 January 2015.

The Metropolitan City of Milan is headed by the Metropolitan Mayor (sindaco metropolitano) and by the Metropolitan Council (consiglio metropolitano). Since June 2016 Giuseppe Sala, as mayor of the capital city, has been the mayor of the Metropolitan City.

The province of Rome (Italian: provincia di Roma) was one of the five provinces that formed part of the Lazio region of Italy. It was established in 1870 and disestablished in 2014. It was essentially coterminous with the Rome metropolitan area. The city of Rome was the provincial capital. During the 1920s, the boundary of the province shrank as land was ceded to establish new provinces. The province of Rome was the most populous province in Italy. On 1 January 2015, it was superseded by a new local government body—the Metropolitan City of Rome Capital.