Did you know that the most dangerous ghost town in the U.S. is located in Oklahoma? It's not so much the supernatural threat, but the place could literally kill you.
It's hard to imagine what it must have been like to be inside this place as Hurricane Katrina laid waste to the city, making things as dangerous inside as they were outside.
What's scarier than investigating an abandoned place? Answer: realizing that you're not alone. That's exactly what happened to some urban explorers who recently checked out what remains of an abandoned elementary school in Illinois.