Provincia di Roma

It is Lazioís largest province (5,350 square kilometers) and it is also the most populated. As of 1992, it has a population of 3,770,157. Divided by River Tiber, it is surrounded by Tolfa Mountains and Sabatini volcanic range (north), Sabini and Simbruini Mountains (east) and the so-called area of Colli Albani (south). Rome is the symbol of western civilization due to its great history, as witnessed by ruins throughout its province. Romeís province is also known for its high number of lakes, which cover an area equal to 1.3% of the entire region of Lazio.
The major ones are of volcanic origin. Bracciano Lake is the regionís second lake and the eighth in Italy size-wise, while Martignano Lake is the third in Romeís province and the ninth in the region. South of the Capital are Albano, Nemi and Giulianello lakes of volcanic origin as well. East of Rome is Percile of karstic origin, while north of Rome is the internationally known Nazzano Lake. The list could go on and on. It is basically endless to show the natural beauty and richness of Romeís province.

I Laghetti di Villa Ada
Il Lago di Villa Borghese
Il Lago di Villa Pamphili
Il lago Sandro Pertini
Lago Albano ( Lacus Albanus )
Lago di Bracciano ( Lacus Sabatinus)
Lago di Giulianello
Lago di Martignano ( Lacus Alsietinus )
Lago di Nazzano
Lago di Nemi ( Lacus Nemoriensis )
Lago Puzzo (o di Leprignano)
Lagustelli di Percile

Provincia di Rieti

Rietiís province is a mountainous area with a lot of history dating back to the Romans. Its remarkable natural beauty was known even then. Along with villages such as Greccio, Antrodoco, Amatrice, and Poggio Bustone, it constitutes the Sabina region. It covers an area of 2,749 square kilometers with a population of just 147,167 inhabitants. Although lakes are just .6% of the entire area, there are many of them. The situation would have been much different if the Romans hadnít drained the large Velino Lake.
Nowadays, Rietiís province has the largest number of artificial lakes: three. Salto Lake, Turano Lake (respectively, the fourth and sixth of the region), and Scandarello Lake. They were all created by dams built in 1920s and 1940s to feed hydroelectric plants. There are other important lakes lying in the flat area such as Ripa Sottile, Long Lake and Ventina Lake, which used to be a part of the above-mentioned Velino Lake. Some other lakes are of karstic or glacial origin such as Rascino, Cornino and Duchessa lakes. Some others are sulphureous like Cotilia given the presence of spas. This richness of lakes makes the region a must.

Lago del Salto
Lago del Turano
Lago della Duchessa
Lago della Petrella
Lago dello Scandarello
Lago di Cornino
Lago di Paterno (Lacus Cutiliae)
Lago di Rascino
Lago di Ripasottile
Lago di Ventina
Lago Lungo

Provincia di Viterbo

Surrounded by Vulsini and Cimini mountains (north) and crossed by Tevere River, it is Lazioís second province size-wise (3,612 square kilometers), but has a small population (281,244). It is separated from Romeís province by Sabatini Mountains, while the southern part, which is flat, is called Maremma. The population is concentrated on the coast, especially in Montalto di Castro. Other than Viterbo, other towns are worth visiting such as Tarquinia, Civita Castellana and Bolsena, which are a tourist target in the summer.
The provinceís lakes play the same role. Bolsena Lake is the regionís largest and fifth in the country and the largest volcanic lake. The second most important is Vico Lake. Others are not very famous but worth seeing, for example Mezzano lake with its half-submerged town.

Lago di Bolsena ( Lacus Volsiniensis )
Lago di Mezzano ( Lacus Statoniensis )
Lago di Monterosi ( Lacus Janulae )
Lago di Vico ( Lacus Ciminus )

Provincia di Latina

It is the result of Romeís and Naplesís provinces giving up part of their territory. It is Lazioís smallest province, only 2,251 square kilometers, and used to be wetland. It is surrounded by Lepini, Ausoni and Aurunci mountains, and is touched by the Tirrenic Sea for 100 kilometers. It is a very interesting area from a cultural point of view (Terracina, Cori, Gaeta, Sezze, Norma), but also attractive because of its beaches.
Circeoís National Park is a major natural attraction that comprehends 4 of the seven main lakes (Sabaudia, Caprolace, Fogliano and Monaci), all saltish water. Some others, such as Saint Puoto, Vescovo and Ninfa, are fresh water.

Laghi del Vescovo
Lago dei Monaci
Lago di Caprolace
Lago di Fogliano
Lago di Fondi ( Lacus Amyclanus )
Lago di Ninfa
Lago di Sabaudia
Lago di San Puoto
Lago Lungo

Provincia di Frosinone

It is Lazioís second province population-wise (482,327) throughout 3,239 square kilometers. The area boomed industrially in the 1960s, leading to urban development such as Anagni, Cassino, Alatri and Fiuggi, which is also a very important hot spring center. Unfortunately, such development has caused a very serious problem: pollution. As a result, Liriís valley has become one of the most polluted areas in central Italy.
Natural beauty is still a characteristic of the area, though. Despite the low number of lakes (five of two of which are artificial), they are definitely worth seeing. Particular attention should be paid to Fibreno, Saint John Incarico and Canterno lakes.

Lago di Canterno
Lago di Colle Mezzo
Lago di Grottacampanaro
Lago di Posta Fibreno
Lago di San Giovanni Incarico
Lago La Selva

Roma Capitale