The train collection of an eccentric New England seafood mogul is now a National Historical Site.

A museum dedicated to the history of electric interurban transit near the home of the first electric trolley system in the United States.

Abandoned blast furnaces are an enduring reminder of Scranton's once booming iron business.

This national landmark is also home to a massive treehouse.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

Catch a ride through the Pennsylvania countryside on this historic narrow-gauge railroad.

This dramatic rail curve was once the target of a failed Nazi attack.

A bronze statue of Mister Rogers in the neighborhood where he grew up.

The site where nine miners were trapped underground for over 77 hours in 2002.

Steepest flood safety railway in the entire world.

Memorializing an American tragedy of massive proportions.

The mortal remains of a Russian prince, priest and paranormal investigator who came to America in 1792.

The largest burial mound in the United States holds the remains of prehistoric West Virginians.

Beyond the usual stories that attend old prisons, this one has deep bloody undercurrents.

Prison made famous by The Shawshank Redemption has been out of commission since 1990.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

Pennsylvania's own Roswell-style UFO mystery.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.