Even Henry David Thoreau found this glacial pothole irresistible.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

Follow the path behind this treat-slinging camper van to a sculpture garden in the forest.

A giant cement churn carries the legacy of American resilience, unity, and greed.

This North Carolina grave is the final resting place of the world's most famous conjoined twins.

Andy Griffith's hometown has made itself up to look like the fictional town of Mayberry.

These strange large stones served as a campsite and lookout post for generations of Native Americans.

The cruel trial of a 13-year-old boy inspired the creation of this now abandoned reformatory.

An eerily abandoned stone tower is all that remains of a demolished dam on Cape Fear River.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

A legendary speakeasy bookstore returns from the brink.

New York City's smallest piece of private property.

A dilapidated dock tells the story of Titanic's missed arrival.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

Elevated freight railway turned wildly successful urban park.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

An unassuming secret door once led to a legendary watering hole.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

This riverfront statue honors the inventor of the first video games ever sold.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

A New England ghost town features a trail of boulders etched with intriguing life lessons.