The famous bell was secreted away and hidden in a church in Allentown during the British occupation of Philadelphia.

The Cold War-era "underground Pentagon" is a sprawling subterranean hideaway for the Defense Department.

This picturesque stream was up until recently the site of a ten story mountain of slag and sewage.

A small museum along the Susquehanna River is home to a rich collection of Native American artifacts.

An ideal wedding spot that is almost too ideal.

Where the "World Pinball Champion” is crowned.

For decades, it has disappeared and reappeared as water levels rise and fall.

A planned settlement in Pennsylvania once housed the aristocratic refugees of the French Revolution.

A unique workspace where offices reside on pirate ships and inside gingerbread houses.

A miniature golf course crafted inside the world's largest simulated cave.

The first American axe throwing club.

Alexander Hamilton’s creation caused quite a bit of controversy.

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

One of the oldest of its kind.

Nothing says indulgence like a 1,500-pound chocolate castle.

According to local myth this cemetery is half evil spirits, half good—split down the middle.

A hidden piece of Altoona's railroad history in a long-forgotten abandoned town.

This forgotten building was one of the few Philadelphia-area breweries to survive Prohibition.

This icon of the Atomic Age now lays dormant.

A rock maze opens up to a panoramic viewpoint at an abandoned mine full of ghost stories.

One of the oldest log cabins in America is one of the last of its kind this historic Swedish dwelling remains a piece of living history.

Steepest flood safety railway in the entire world.

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

An almost life-sized elephant named Ms. Ellie greets visitors at this jumbo-themed museum.