In a new photo series from Business Insider, we got to see a close look at North Brother Island – an abandoned island in the middle of New York City that almost no one is permitted to visit.

It’s history of death, disease and decay make it one creepy place that goes unnoticed in one of the busiest cities in the world.

Throughout the United States, there are certain places that some people swear are haunted, and other places that are just plain creepy. Here is our list of the top six creepiest:

Creepy clown sightings have been reported in Ohio, South Carolina, North Carolina, California, Wisconsin, and Georgia, causing fear and panic to many communities. Are these “clowns” just pranksters? Or is something more serious going on?

Several children have said they were offered money by the clowns to follow them into the woods. And dozens of these kinds of sightings have been reported to local police.

“It’s illegal, it’s dangerous, it’s inappropriate, it’s creating community concern,” said Greenville, SC police chief, Ken Miller.