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

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

This humble star-gazing center touts itself as the "Birthplace of American Astronomy."

Mussolini gave Cincinnati a bronze statue of Romulus and Remus suckling at a wolf's teats.

Visitors to this arboretum are greeted by three smiling giants crafted from sustainable materials.

A local scoured more than 1,000 acres for stone to create his masterpiece.

An abandoned theme park with a strange and tumultuous past.

A ship that lived many lives under many names is now known merely as the "Ghost Ship."

Ethereal alien hums and haunting whale songs emitting from...a giant sheet of vibrating metal?

This tiny 19th-century tunnel was built so a man could move his cows from one field to another.

This limestone outcropping was once a ceremonial site for ancient Native Americans.

This mansion turned restaurant was once a pitstop for Al Capone during his travels.

The "Jade Museum" is full of thousands of intricately carved works of art made from various precious stones.

Crumbling Kennedys and a decaying Tecumseh are just some of the haunting remains of one man's cement art trail.

A restored, one-room African-American schoolhouse in the diva's hometown now preserves the legacy of its most famous student.

The site of the one of the most deadly train wrecks in American history.

Dinosaurs invade a suburban Nashville neighborhood.

These early tent-shaped grave coverings are unique to Appalachia.

An engraved boulder marks the spot where Patsy Cline's life ended in a plane crash.

The small cave that housed Tennessee's "first citizen."

A reclusive Memphis neighborhood is home to decades worth of misunderstood Masonic folk art.

Elvis's own personal tropical hideaway.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

Live long and prosper in Tennessee.