A field of nothing but boulders which resembles a giant's gravel driveway.

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

This jail which was in service for over a century is now open for curious visitors.

There's a crumbling old mansion inside the Smithsonian National Zoo.

The United States Capitol's former columns still stand.

The Home and murder site of the witch of Rehmeyers Hollow.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

In which a local geological marvel becomes a quaint roadside attraction.

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

What looks like a simple quaint estate in rural Pennsylvania was in the 18th century home to a small monastic community.

The oldest farmer's market in America is so ancient it was approved by the King of England.

The first of Lancaster's "rural cemeteries."

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

The slate extracted from these Pennsylvania quarries was once hailed as the finest in the world.

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

This stone tower marks a lookout point over the historic Washington Crossing, and maybe some buried treasure.

A historic covered bridge is but one example of an oddly prevalent American urban legend.

This giant disembodied horse head seems to balance impossibly on its nose.

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

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

World's first "penitentiary," meant to be humane, drove men insane.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

An Irish Memorial commemorating those who perished due to potato blight.