4. Lalaurie Mansion
The tall, 3-storey building is located in New Orleans. The Lalaurie Mansion once housed a certain Delphine Lalaurie, a New Orleans resident socialite who holds a dark secret. Here in this mansion, serial killer, Madame Lalaurie tortured, then murdered her household slaves. The many slaves who have died here are still said to be around, haunting and looking to exact revenge.