When ecosystems collide in the arid Southwest.

The largest self-built castle in the U.S., six decades in the making.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The ghostly remains of an accidental sea.

Version of the French Riviera destroyed by the sea.

A hand-built folk art installation covered with messages of God's love.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Fans of vintage Vegas, kitsch, and toy pony-based gambling now flock to a casino called The D.

A land of debatable treasure.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

The most magnificent bottle house in a town strangely full of them.

Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

An exotic wildlife habitat right off The Strip.

Experience a charming 1930's version of "infotainment."

Odd outsider art installations surround a Gold Rush-era ghost town.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

The bizarre headgear looks like it was made for a fool, not a king.

This quirky hot springs town known to locals as "T or C" was named after a radio show.

This is one really big nut.

A multi-storied adobe complex has been inhabited for more than a thousand years.