Veroli is one of Ciociaria's richest centers of history, art and culture, in fact in the historic town it is possible to observe the many riches of the place. Set on a gentle rise in the heart of Ciociaria, and overlooking the Plain of Frosinone, Veroli is a medieval town with very ancient origins. Founded, in fact, by the Ernicians, whose acropolis and megalithic walls can still be seen (preserved in good condition) at the highest part of the hill, Verulae formed, with important Ciocian cities such as Anagnia (Anagni), Aletrium (Alatri), Ferentinum (Ferentino) and other minor centers, the Lega Ernica.
It also became a faithful ally of the Romans from the reign of Tarquinius Superbus, and even today, in honor of this coalition, the inscription "verulana civitas almae urbi confederata" (the city of Veroli confederated to generous Rome) appears on the city's coat of arms.
Beautiful are the steep streets characteristic of the historic center, through which it seems as if one is walking back in time. Many are the monuments that attest to its importance. Of the pre-Roman city there are in fact the remains of polygonal walls that encircle the Fortress of San Leucio. eroli would have been present as early as the 12th century BC. Ancient Verulae was one of Rome's allied towns, as evidenced by the tables of the Fasti verulani: a Roman marble calendar dating from the 1st century AD. In 743 it became an episcopal see, as the numerous churches in the area still testify. In the 16th century the Spanish allies of the Colonna family occupied the town. Once liberated, it was subjected to a government of cardinals. The close union with the Church of Rome was felt several times over time. So much so that around 1800 burgesses who had taken part in the Roman Republic of the Jacobins were lynched by the population.