This whimsical outsider art wall holds tiny treasures donated by the local community.

This stretch of highway is said to be haunted by ghosts of settlers whose graves were paved over.

The only ancient owl carving found east of the Mississippi.

This kitschy curio wonderland is full of fake animals, teak tables, and a cacophony of random bric-a-brac.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

This bridge is haunted by the ghost of a distraught mother.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

A collection of old neon signs from all over Poland line a secluded courtyard.

In the center of Wrocław's old meat market stands a somber tribute to the city's livestock.

An underground city of salt.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

Carrying on the legacy of a short-lived experimental school tucked away in the mountains of North Carolina.

A museum dedicated to the legacy of Bob Moog and his pioneering synthesizers.

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

Ruins of an American Civil War iron forge still survive today.

A 120-year-old legend concerning an empty circular patch in the North Carolina woods.

In a pedestrian tunnel on North Carolina State’s campus resides an expressive and artistic free-for-all.

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

This woodland architectural installation acts as a camera obscura for the heavens.

These mysterious ruins are hidden amid this sleepy coastal city.

A replica of one of the more than 15,000 civilian lookout towers that lined the U.S. coast during World War II.

The ruins of a once-thriving sugarcane plantation that was burned in the Second Seminole War.

Despite being made of a seashell mortar, the crumbling remains of this historic Florida mill are still standing.

The ruins of this antebellum sugar plantation are the end result of a Seminole attack during the Florida Wars of 1836.