A giant ball made from pieces of an old Jeep.

This museum is dedicated to the first coast-to-coast highway.

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

Where the famed frontiersman was born, raised, and survived Quaker intrigue

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

An eccentric priest's tribute to George Washington, this chapel tells the story of the American Revolution.

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

Narrow gorges and deep pools created by long-ago glaciers.

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

An otherwise quiet campground becomes a bustling medieval town for two weeks every year.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

Hundreds of protractors affixed to surfaces all over the city.

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

The oldest surviving presidential residence in the United States.

This shop filled with oddities and knick-knacks is named for a 19th-century charlatan.

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

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

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

These lush botanical gardens employ the most purrfect pest control force.

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

This icon of the Atomic Age now lays dormant.

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

Despite being stolen multiple times, this civic electrician's street corner Snoopy won't be stopped.

A larger-than-life statue of America's favorite sundae marks the place it was invented.