Naga City, Camarines Sur's largest city, is also the Bicol Region's economic, cultural, educational, and religious center. They city pre-dates Spanish Colonization and has been the seat of the Catholic Church in southern Luzon since late 1500s, proof of which are its massive churches like the Naga Metropolitan Cathedral and the Peñafrancia Basilica. For more than 300 years, at least a million devotees and pilgrims flock to Naga every September for the Peñafrancia Festival.