Civita Castellana Cathedral

Nepi Cathedral was built on the site once occupied by the pagan temple dedicated to Jupiter. A first cult building was already present in the 5th century. Plundered and destroyed in 568 during the wars between the Lombards and the Byzantines, it was reopened in the 9th century. Enlarged and embellished in the 11th and 12th centuries, it was enriched at that time by the splendid crypt. On 2nd December 1798, the building was set on fire by Napoleon's troops. It was rebuilt again between 1818 and 1840.

The church of St. John the Baptist dates from the 13th century. Enlarged in the 16th century and then remodelled between the 17th and 19th centuries, the façade is one of the rare survivors of the original medieval building. The bell tower dates from 1602. The interior consists of three naves divided by pillars. The presbytery is a late 16th-century work of Giacomo Del Duca, who also designed the wooden coffered ceiling. Among the many works of art that decorate the church are frescoes by Zuccari with the Stories of the Virgin and the Stories of St. John.

The present Orte Cathedral, opened for worship in 1721, was built to replace the previous medieval basilica, whose three-nave plan it retains. The stucco decoration is rococo, rather sober and elegant. The floor, originally made of terracotta, was replaced in the second half of the twentieth century by white Carrara marble.