NEW ORLEANS - For many revelers, Halloween is a week-long celebration of all things spooky in New Orleans, a city that not only appreciates, but celebrates its dead.

"There's so much paranormal history here," said Chris Turnbow who lives in the Marigny neighborhood.

Turnbow enjoys telling visitors about the LaLaurie Mansion on Royal Street. The mistress of the house, Madame Delphine LaLaurie ranks among the city's most notorious serial killers.

Legend has it, she operated a torture chamber in her attic in the early 1800s.

"I've seen some strange things here," Turnbow said. "One night I come back here around 2 o'clock in the morning there was like million orbs all over this house."

More than a dozen hotels in the city's historic French Quarter claim to be haunted. People say they've seen at least three ghosts at the Dauphine Orleans.

"There's a bride," hotel house supervisor Joel Peterson said. "There's also a groundsman as well. There's also a child that's looking for his mother."

Peterson added, one day he heard a thump and a rumble and all of a sudden books and pamphlets were flying off the shelves inside the hotel bar.

"We just saw them constantly falling off the shelves and for some reason, all the pamphlets kept landing on the same page, all of it was (Hurricane) Katrina pages.

The many cemeteries in New Orleans, like St. Louis number one on Basin Street are also known for ghostly sightings.

"We guestimate that the dead outnumber the living in New Orleans 10-1," French Quarter Phantoms Guide Luke Siddal said. "There are legends that Marie Laveau haunts the cemetery. You'll see her wandering around in there with her pet snake, her pet python or her little black cat."

Anjelique Butler from Maryland and her family are among the many visitors in town for the Halloween festivities.

"No ghosts yet," Butler said. "But, we're hoping to see some good sites. We're going to be here until tomorrow, so hopefully tonight, we'll see some pretty cool stuff."

Many hotels in the city are booked up for Halloween.

The New Orleans Tourism Marketing Corporation estimates about 100,000 visitors are in town for the annual festivities.