Velletri Cathedral

The Cathedral of Albano was consecrated in 1721 but is located on the site of an older basilica, dedicated to St. John the Baptist, founded by Constantine I (4th century). Pope Leo III (750-816) built a new cathedral on the site and changed the dedication to Pancras of Rome.

The Cathedral of Frascati was built from 1599 on the plans of the architect Ottaviano Mascherino (1536-1606) to cope with the increase in the city's population, which had become too large for the parish church of Santa Maria in Vivario. The construction was financed by an initial contribution from the Holy See, donations from the parishioners and, from 1608, by taxes on the famous local wine. The completion of the first works dates back to 1610. The present Baroque façade dates from 1696-1700 and is the work of Girolamo Fontana. The choir was rebuilt in 1703 and the side campaniles with clocks were added in 1747.

The Cathedral of Palestrina was built in the 15th and 16th centuries on an ancient church, it was enlarged in the 18th century and largely rebuilt in the 18th and 19th centuries. The façade has Romanesque elements in its upper part, while the marble portal bears the coats of arms of the Della Rovere and Colonna families. The façade has also preserved traces of an ancient sundial from the Roman period.