The Cattedrale di San Pietro Apostolo, located in the town of Civita Castellana in Italy, is a prominent Roman Catholic cathedral. It is dedicated to Saint Peter, one of the twelve apostles of Jesus. The cathedral features a blend of architectural styles, primarily Romanesque and Gothic, showcasing intricate details and beautiful frescoes. Construction of the cathedral began in the 12th century and continued over several centuries, resulting in its rich historical significance. The interior houses various artworks, including sculptures and altarpieces, that reflect the religious heritage of the region. The cathedral remains an important site for worship and tourism.