This spot memorializes one of the greatest plays in NFL history, unless you happen to be a Raiders fan.

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

The only statue of its kind to commemorate Washington's beginnings as an officer of the British Colonial Militia.

One of the oldest Catholic churches in the U.S., situated just east of Gettysburg.

This stately 19th century library pushed architectural boundaries at a time when the public library movement was just taking off.

In the bowels of a 19th-century brewery lurks a fine-dining restaurant offering an array of themed feasts.

Dozens upon dozens of boulders engraved with scripture tell the story of one man's troubled life.

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

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

A portion of the old Pirates stadium over which a defining home run once flew still stands even after the rest of the stadium was torn down.

Journey through a collection of over 35,000 Halloween items from all generations.

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

The legacy of baseball great Roberto Clemente is preserved in a retired Pittsburgh fire station.

Each step is a mere four inches tall, said to be measured by the stride of a woman wearing a hobble skirt.

This strange, big-tailed beast became a Pennsylvania town's unofficial mascot.

The home of possibly the least-loved U.S. president stands as a sort of unpopular Monticello.

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

Memorializing an American tragedy of massive proportions.

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

The residents of this ominous-sounding street in Pennsylvania liked its name so much they fought to keep it.

The site of the little-known Pennsylvania battle that sparked the Seven Years' War.

The final resting place of the Hollywood star who came to a tragic end.

A diorama of the Civil War, fought by cats.

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