The longest navigable underground river in the United States is home to countless blind and albino animals.

This Spokane mansion and the stories within its walls have been brought back to life, thanks to careful restoration.

Local legend has it that an old, decaying staircase outside this cemetery is haunted by dozens of ghosts.

One of the best places to dig—some say on the planet—for six different types of chalcedony.

Home to a seasonal waterfall and swimming hole in the Ouachita Mountains.

An ever-growing collection of rare and strange objects owned by local Arkansas illusionist Maxwell Blade.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

Historical structures and natural wonders await visitors to this preserve.

Hidden on two floors of downtown building, the library has an incredible deal on rent.

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

This magnificent Cincinnati graveyard is also a popular public park.

This collection of Japanese luck idols beckons visitors with over 2,000 waving paws.

Where beautiful signs live on forever.

This iconic meat-and-three seasons every dish with ancestral cooking knowledge from South Carolina’s Lowcountry.

This collection of vintage signs reflects the long and colorful history of this Arizona town.

Inside this store, a mysterious statue draws visitors from the world over.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

A natural history wunderkammer in the middle of the desert.

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

This bomb shelter-themed bar has barely changed since it opened.

This collection of neon icons is preserving Arizona's history, one sign at a time.

America's only nuclear missile silo open to the public.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.