These massive concrete balls were used to mine gold in Virginia.

The airport was once a Civil War battleground, and the earthwork defenses can still be seen today.

This beautiful vintage movie palace has seen little change in form or function since the 1920s.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

A mud brick kasbah with a history of lavishness and traitorship.

The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

A fortified city, home to a remaining population of five families

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

An errant donkey ushered in a new era of mining in Nevada.

In the middle of a remote desert town is a surprisingly opulent hotel.

Graffiti, cars, and religion combine to create this jungle of scrap in the Nevada desert.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

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

Temporary Burning Man sculpture made of two 18-wheelers.

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

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

The drama of nature in full effect in this Nevada State Park.

Oh, just a motel on the edge of the desert decorated with thousands of clowns conveniently located next to an abandoned graveyard.

The competition: breathe deeply as long as you can.

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

Named the fifth most beautiful building in America in 1885, this former courthouse boasts the best view in the Village.