The uniquely-designed winter home and sculpture studio of Anna and Archer Huntington.

Despite the ever pressing encroachment of urban sprawl this grand New Orleans manse still stands.

A museum of unusual collections, mini-towns, and a half-dog, half-alligator.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

Medical museum featuring a number of excellent medical models.

This simple, broken column marks the final resting place of one of America's most famous explorers.

Small-town museum dedicated to outer space ... and bicycles.

This large midwestern cavern features impressive rock formations and an underground waterfall.

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

A whimsical, punny collection of "fence art" outside the tiny mountain town of Baker, Nevada.

Eastern zen meets Western grit in these four little trees growing out of a rock on Lake Tahoe’s Nevada shore.

Bits and pieces from the ill-fated Donner Party's winter cabins.

Self-built house and sculpture park where the creator can still be seen in a glass coffin.

James Turrell's total color immersion art installation, hidden on the top floor of a luxury handbag shop.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

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

The world's largest military aircraft cemetery.

A $100,000 tumbleweed decorates an Arizona park and ride that got its priorities a bit tangled.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

A futuristic temple of light uses prisms and rainbows to create an atmosphere of peace.