It is located in the French Quarter on Chartres Street across from Jackson Square facing the Mississippi River between two historic buildings that house the Cabildo and the Presbytere, Louisiana State Museums. We heard jazz bands playing on the promenade in front of the museum where tourists and local gather to enjoy the museum and seek out the many "fortune tellers" with tables set up in the area.
The interior of the cathedral is stunning. The flags on the right side in the photo below represent the countries that New Orleans has been under from the founding of the church in 1718 through to the present. The ones on the left are the Papal flag, Coat of Arms of the Basilica. the Coats of Arms of the Diocese of the Metropolitan Province of New Orleans, and, of course, the U.S, flag. Check out the frescos above the Altar and on the ceiling.
The Altar with statues of St. Peter (left) and St. Paul (right). The statues at the top of the altar represent Faith, Hope, and Charity.
This beautiful Statue of Mary and Painting of Mary are located to the left of the Altar.
There are ten gorgeous stained glass window that represent the life of St. Louis.
The Holtkamp pipe organ (located in the upper balcony at the back of the church) was damaged by Hurricane Katrina. It has since been repaired and re-installed.
A brochure that describes the interior of the cathedral is available at the entrance for a $1 donation. Also, a gift shop can be found to the left of the entrance where a guide book and other religious items can be purchased. I enjoyed the beauty of this historic cathedral.