Mentioned by The Crazy Tourist
55 Best Things to Do in New Orleans (LA
"The longest continually active Roman Catholic church in the United States stands proud on the city side of Jackson Square. Dedicated to Louis IX of France (1214-1270), St. Louis Cathedral dates from 1789, although there was a church at this spot as early as 1718. The current cream-coloured Spanish Colonial building was reconstructed in 1850, and most of the architecture is from that time."