According to Wikipedia, in the United States alone there are at least six haunted hospitals and insane asylums, and five haunted hotels, including, notoriously, the Chelsea in Manhattan, where Dylan Thomas, Eugene O'Neill, and Thomas Wolfe have been seen after their deaths. There are also ghostly theatres, cinemas, schools, colleges, and prisons. Mental hospitals are notoriously haunted by former patients and attendants; factories are haunted by the spirits of workers who died there, lighthouses by their keepers, and in Sunnyvale, California, there is a haunted Toys 'R' Us.
Alison Lurie, The Language of Houses: How Buildings Speak to Us.
