What about the Haunting in Orleans Parish?
One of the spookiest, creepiest places in the US is Old Metairie in Jefferson Parish to Orleans Parish, the Spooky cemetaries, Plantation mansions and the murky swamps along with the Voodoo Culture and numerous deaths have turned New Orleans into one of the creepiest yet most exciting places in the US to visit.. The whole city is haunted and everybody knows it.
That would make a great supernatural horror flick.
But i guess it's already been done with more than a few Horror flicks filmed there.