Neighbors living near the World Trade Center site are unnerved by a horror movie-like “wailing” sound that echoes mysteriously from the new tower on windy days.

“It almost sounds like a Gregorian chant — it will hold a single note. It’s a very spooky wailing,” neighbor Kenny Cummings, who taped the noise, told The Post.

“One can come to their own conclusions about why it’s happening. But when something like this pops up at a such a sacred ground, it’s a little disconcerting,” he said.

Even construction workers nearby admitted it was creepy.

“I heard it last week. It definitely creates a mild howl, ” said John Michaels, 53.