A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

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

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

Steepest flood safety railway in the entire world.

Memorializing an American tragedy of massive proportions.

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

A local prank turned town icon.

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

A small granite block at this monument's base is the only part of Lincoln's Tomb outside of Illinois.

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

This 19th century machine put animals (including humans) in boxes to study how they metabolized calories.

Penn State's giant bug collection.