A 2,000-year-old Adena burial mound located along a busy street in Columbus, Ohio.

A memorial for an outsider theorist who believed that the planet is actually hollow.

The inventor of the iconic Pringles can was so proud of his invention he was buried in one.

A former nuclear facility during the Cold War turned nature preserve.

Inside, ancient treasures. Outside, modern contradictions.

A small town museum celebrates the history of the Ohio county that produced Annie Oakley and other famous figures.

One of the first schools in the U.S. to admit students without regard to race or gender.

The highest point in Indiana is curated by an Eagle scout but may be in danger of losing its record to a nearby garbage pile.

This unassuming home was once “grand central station” for the Underground Railroad.

A giant lumpy candle serves as a beacon for this highly scented pit stop.

This Indiana walk of fame honors music legends with record-shaped plaques in the pavement.

In the Mound Hill Cemetery resides the final resting place of the world's tallest couple.

Faces carved into the cliffs create an otherworldly walking trail.

This massive airship factory is so large that it has its own indoor weather.

An elegant sandstone stairway built by the WPA still connects two neighborhoods in Akron.

This “living museum” at UCLA exhibits thousands of plant species from all over the world.

What began with a single, 357-pound chunk of the Canyon Diablo meteorite grew to be an impressive collection. 

A magnificent, reportedly haunted mansion built for a composer by Spiritualists.

These two K-9 memorials commemorate the sister cities of Edinburgh and San Diego.

A secluded hilltop monument marks the final resting place of Lucy, Presidio Park's beloved white deer.

This San Diego museum is dedicated to preserving women’s historic achievements.

San Diego's most historic and haunted home.

Lucha Libre (Mexican Wrestling) themed taco shop.

Lemon Grove, California is known for its giant lemon...and mummified bodies.