Rome (English pronunciation: /roʊm/; Italian: Roma, pronounced [ˈroːma]; Latin: Roma) is the capital of Italy and the country's largest and most populated municipality (central area), with over 2.7 million residents in 1,285.3 km2 (496.3 sq mi), while the population of the urban area is estimated by Eurostat to be 3.46 million.[2] Themetropolitan area of Rome is estimated by OECD to have a population of 3.7 million.[3] It is located in the central-western portion of the Italian Peninsula, on the Tiberriver. The city has been one of history's most powerful and important centres, being the home of the emperor during the Roman Empire and the Italian government. The city also has a significant place in Christianity and is the present day home of the Roman Catholic Church and the site of the Vatican City, an independent city-state run by the Catholic Church.[4] Due to this, the city has often been nicknamed "Caput Mundi" (Latin for "Capital of the World")[5] and "The Eternal City". Also, Rome is widely regarded as one of the world's most beautiful ancient cities[6].