An occult-y, historic hotel with the World's Largest Ouija board on the roof.

America's smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.

The aggressively banal name of this underground fortress of bureaucracy does little to evoke its truly surreal existence.

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

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

Descendants of this colonial Pennsylvania family still travel from far and wide to visit the 300-year-old home of their Quaker ancestors.

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

A museum commemorating the Donora Smog, which killed 20 people in October 1948 and sparked national outrage over air pollution.

A tiny, unmarked beer and whiskey bar above an Ethiopian restaurant in West Philly fails to conceal live bluegrass.

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

Penn State's giant bug collection.

A preserved 18th century homestead in Western Pennsylvania marks the spot where the Whiskey Rebellion began.

This colonial mansion has been home to a staggering number of American historic figures.

A giant ball made from pieces of an old Jeep.

This public space is speckled with the eerie remnants of a defunct amusement park.

A museum of anything and everything Stooge.

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

Where the "World Pinball Champion” is crowned.

A retrofuturistic art installation in the Pittsburgh Airport.

The final resting place of two members of the infamous Doan gang, notorious outlaws and Revolutionary War Loyalists.

Could it have picked a better place to land?

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

The abandoned coal loading dock is a canvas for unsanctioned art.

The graffitied ruins stand hidden within the Pennsylvania woods.