The Cathedral-Basilica of Saint Louis, King of France (French: Cathédrale-Basilique de Saint-Louis, Roi-de-France, Spanish: Catedral-BasÃlica de San Luis, Rey de Francia), also called St. Louis Cathedral, is a Catholic cathedral and basilica in New Orleans, Louisiana. It is the seat of the Archdiocese of New Orleans and is the oldest cathedral in continuous use in the United States alongside the Royal Presidio Chapel in Monterey, California. It is dedicated to Saint Louis, also known as King Louis IX of France. The first church on the site was built in 1718; the third, under Spanish rule, built in 1789, was raised to cathedral rank in 1793. The second St. Louis Cathedral was burned during the great fire of 1788 and was expanded and largely rebuilt and completed in the 1850s, with little of the 1789 structure remaining.
Saint Louis Cathedral is in the French Quarter of New Orleans, Louisiana, United States, on the Place John Paul II (French: Place Jean-Paul II), a promenaded section of Chartres Street (rue de Chartres) that runs for one block between St. Peter Street (rue Saint-Pierre) on the upriver boundary and St. Ann Street (rue Sainte-Anne) on the downriver boundary. It is located next to Jackson Square and facing the Mississippi River in the heart of New Orleans, situated between the historic buildings of the Cabildo and the Presbytère.