In which a local geological marvel becomes a quaint roadside attraction.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

A macabre farm reserved part of its 222-acres for dead bodies, all in the name of science.

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

Contrary to what one might expect, ice forms inside this small cavern during the summer and melts during the winter.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.

A toxic ghost town sitting atop a massive coal fire.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.