One of the most unusual geological features, recognizable from a dozen hit movies.

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

This unique graffiti art from the 1940s has become a staple of this local landscape in the remote California desert.

Hundreds of graffiti artists have decorated this flood-wall on the west bank of the Mississippi River.

This dormant volcanic crater has been converted from a roiling pit of magma to a pleasant hiking spot.

The ghost town that ended up on Ebay.

This once-booming Gold Rush town is now home to a herd of feral donkeys.

A pair of large white marble lions guard this stretch of the Mojave Desert, and it is utterly mysterious how they got there.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

A mining town once rife with murderous disputes over its copious treasures now creates income as a popular spot for photo shoots.

A brothel nestled amongst ghost towns, with an abandoned plane wreck to greet you.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

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

Mysterious meeting place for UFO hunters near Area 51.

A sharp bend in a dramatic river canyon cut through red rocks.

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."

A massive hydrovolcanic explosion left a half-mile wide crater in Death Valley.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

A tunnel with windows, so you don't miss out on the impressive views.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

The unusual patterns in this rock formation result from two distinct modes of weathering.

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

The elliptical citadel resisted the advance of the mighty Ottomans several times, thanks to the military prowess of the "Dragon of Albania."