Prolific outsider artist Sid Boyum's concrete sculptures add whimsy to Madison's Schenk-Atwood neighborhood.

The final resting place of one of Thomas Jefferson's formerly enslaved sons.

The birthplace of American international flight service has been turned into a celebrity's microbrewery.

A swamp that was the site of prehistoric water burials also managed to preserve its corpses for millennia.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

In the depths of the Everglades, one man has dedicated his life to studying the elusive Skunk Ape.

The humble home where the famous beat author lived briefly and wrote one of his most famous works.

A tribute to Ponce de Leon's supposed quest for eternal youth.

Here’s how Robert the Doll earned his reputation as the most haunted doll in the world.

An underwater city for the dead.

A much more welcome kind of snowbird vacationer, manatees camp out in these springs every winter.

Many believe these images represent interstellar lifeforms.

This rest area is also home to a remarkable petroglyph site.

One of the few remaining indigenous petroglyph sites in Nevada.

A Wild West saloon that helped define a generation of psychedelic rock.

This sign designates the road that leads to the infamous Area 51.

This beloved roadside attraction welcomes visitors with his signature neon smile.

Thousands of glyphs created by an unknown culture decorate the rock formations of this canyon.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

Rich red almandine gemstones are waiting inside the volcanic rock strewn across this eastern Nevada hillside.

This central Nevada cave is the spiritual home of ancient and enigmatic pictographs.

A series of labyrinths in the Nevada desert inspire meditation and calmness.

Potential high level nuclear waste storage site for the next 10,000 years and beyond.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.