[5] In historic times, the Volsci founded here their still unidentified centre called Ulubrae, although the lost city of Suessa Pometia could also have been located nearby.

Ulubrae is mentioned by Horace, Pliny the Elder, Suetonius, Cicero and Juvenal, referring to the numerous patrician villas built here.

Around the 3rd century AD, the area was invaded by marshes, and the inhabitants of Ulubrae likely moved to Tres Tabernae, which grew in importance and became a Christian bishopric site with a Palaeo-Christian cathedral dedicated to St.

The barbarian invasions in Italy caused further expansions of the marshes, and Tres Tabernae declined until, in 592, pope Gregory I united its diocese to that of Velletri.

In 1159 Pope Alexander III fled here to escape emperor Frederick Barbarossa who, in retaliation, destroyed the borough, which was later rebuilt by the Frangipani.

After the abolition of the Cassa per il Mezzogiorno, the industrial sector gradually lost importance and unemployement increased substantially in the territory.