St. Mary’s Basilica, located at 105 S Union St, Natchez, MS 39121, is a historic Catholic church known for its stunning Gothic Revival architecture. Built in the 19th century, it stands as one of the oldest and most beautifully preserved basilicas in Mississippi. The church features intricate stained-glass windows, towering spires, and a richly decorated interior, making it not only a place of worship but also a cherished landmark for visitors exploring Natchez’s deep religious and cultural heritage.