The LaLaurie Mansion
This is a famous ghost story and any google search will produce a plethora of conflicting information on this site. I first learned about this location on a haunted New Orleans tour and although parts or the story may be fiction, if even a portion of the story is true it is horrible. As on most such tours, I never saw anything to indicate a real haunting, but the story is horrifying enough.
Th LaLaurie Mansion
According to haunted New Orleans tours and sources, The LaLaurie Mansion is the most haunted sites in New Orleans. Sources say that the house is filled with tormented screams and terrifying wails. They describe chains rattling at night and the apparitions in chains wandering the halls. The house has been many things since the famous Delphine de LaLaurie abandoned it, but it hasn't been anything for as it has been quickly abandoned by every resident afterwards. Some stories indicate that the ghosts here are aggressive and that they have attacked residents with whips and some even claim that multiple deaths have resulted from the hellish, supernatural residents of 1140 Royal Street.
The history of this mansion can only be confirmed to a point. It is known that Delphine LaLaurie was a wealthy, socialite who resided until 1833. Many accounts from contemporaries show that Madam LaLaurie was uncommonly cruel and beastly to her slaves, even for a time when cruelly to slaves was somewhat common. Following a kitchen fire in the house in 1833, the remains of over 100 dead slaves were found. After this, the evidence becomes weaker. Many sources indicate that firefighters entering the house found a room in the house in which slaves had been tortured in the most gruesome ways. It is said that some slaves had been subjected to many unnecessary surgeries and had had their sex organs remove, mutilated, or sewn onto other slaves. Other slaves had their mouths sewn shut with feces in them and their intestines removed and nailed to the floor. The list of atrocities goes on and on.
Whether the more gruesome elements of this story are true or not, it is true that LaLaurie was a beast and a serial killer and that reports continue that this house is tormented by constant ghosts and spirits. Anyone curious about this house will be easily appeased, as it is a regular part of all haunted New Orleans tours and the guides stories about the house are beyond chilling.