Casco Antiguo displays a mix of architectural styles that reflect the country's cultural diversity: Caribbean, Republican, art deco, French, and colonial architecture mix in a site comprising around 800 buildings. Most of Panama City's main monuments are located in Casco Antiguo, including the Salón Bolivar, the National Theater (founded in 1908), Las Bóvedas, and Plaza de Francia. There are also many Catholic buildings, such as the Metropolitan Cathedral, the La Merced Church, and the St. Philip Neri Church. The distinctive golden altar at St. Joseph Church was one of the few items saved from Panama Viejo during the 1671 pirate siege. It was buried in mud during the siege and then secretly transported to its present location.