In 2018, Pohoiki Road was severed by lava flowing from the eruption of Kilauea.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

This small memorial is almost as well concealed as Smalls himself was on the night he sailed to freedom.

Most historians agree that the so-called "Gentleman Pirate" wasn't much of either of those things.

This mountaintop refuge rehabilitates tigers, lions, bears, and more from illicit wildlife trade—and offers overnight lodging.

This mill has survived a tumultuous past to still produce flour and cornmeal.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

A stack of stones steeped in Irish folklore, much like the hero they're connected to, hide in plain sight.

A large stone map of Arkansas awaits visitors to its highest point.

This black shoreline is made up of exploded lava particles.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

A model of a galactic embassy is hidden in plain sight along the highway, proposed by a UFO religion to find the aliens that created life on Earth.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

More than 2,000 species of tropical plants call this nature preserve and sanctuary home.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

This legendary urban waterfall creates a dazzling display of rainbows.

The largest collection of model trains in the world is actually run using full-size locomotive technology.

A trash dump made beautiful by nature's power.

A local dialect born in the late 19th century is only spoken in this isolated California valley.

One of the largest Buddhist communities in the West sits on the site of an old hospital.

A 131-year-old wunderkammer of Texas history.

The Ozarks' strangest dwelling.

An extravagant western hotel where every floor is the "ground floor."

This century-old roadside attraction is full of bizarre rock formations.