|Franco in 'Rise of the Planet of the Apes'|
After hearing some real facts about the city ("the dead buried in New Orleans outnumber the living 10-to-1") and likely less-real ("the French Quarter is cursed because it was built on top of a Native burial ground"), Franco compares New Orleans to "amusement park where you can get killed."
Of the few ghost stories Franco heard about on his tour, there was the haunting of the Andrew Jackson Hotel, a few vampire legends and the tale of the LaLaurie Mansion - previously owned by Nicolas Cage. Perhaps the most infamous (and supposedly most famous) location in New Orleans, the LaLaurie Mansion was the site of slave torture, although some of the more gory details Franco relates (a [secret chamber held "living and dead victims of a variety of mutilations: amputations, limbs exchanged between people, sexes switched ... skin flayed in designs to turn the victims into 'human caterpillars' and other grotesque monstrosities") is the stuff of folklore and fiction.
However, while Franco does not explicitly admit to a belief in ghosts, he does relay a ghostly story that took place in New Orleans while filming Sonny (which was, interestingly, directed by Cage):