The western boundary of the province is represented by the Tyrrhenian Sea on which spread to about 130 kilometres (81 mi) from the coast near Rome from Civitavecchia to Torre Astura.

In the territory there are several lakes, almost all of volcanic origin, which are concentrated in the north-west of the mountains and Sabatini in the south-east of the Colli Albani.

The new Metro municipalities, giving large urban areas the administrative powers of a province, are conceived for improving the performance of local administrations and to slash local spending by better coordinating the municipalities in providing basic services (including transport, school and social programs) and environment protection.

Here is a list of the municipal government in cities and towns with more than 15,000 inhabitants: The Metropolitan City of Rome Capital is the centre of a radial network of roads that roughly follow the lines of the ancient Roman roads which began at the Capitoline Hill and connected Rome with its empire.

Today Rome is circled, at a distance of about 10 km (6 mi) from the Capitol, by the ring-road (the Grande Raccordo Anulare or GRA).

Due to its location in the centre of the Italian peninsula, Rome is the principal railway node for central Italy.

The city has its own quarter on the Mediterranean Sea (Lido di Ostia), equipped with a tourist port and a small channel-harbour for fisher boats.

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.

[8] The first section with 15 stations connecting Pantano with the quarter of Centocelle in the eastern part of the city, opened on 9 November 2014.