The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

This highest peak in New Mexico is named after an explorer who had a habit of lending his moniker to peaks.

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

The highest bridge in America was built for an almost unnervingly small amount of money.

These aggressively sustainable art homes look like something out of 1970's science fiction.

Possibly the world's only drive-in movie theater with an attached motel.

Every president in history is immortalized in bronze in downtown Rapid City.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

This infamous prison has a store where you can buy goods crafted by incarcerated people.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

This staircase full of Mayan hieroglyphics is perhaps the largest single text in the world.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

'Cause the fence start shaking, the earth was quaking.

Discover for yourself what Herb Caen referred to as "the best kept secret in the Bay Area."

This subtle Berkeley paving stone actually marks off a lawless tube of air that extends into space.

Stunning examples of Russia's 18th-century wooden architecture.

This soviet pilot's graveyard is filled with headstones made of airplane fins.

Tombstones buried in overgrown grass mark the deceased occupants of this abandoned graveyard.

These crumbling Latvian forts make for some haunting seaside ruins.

This impressively complicated radioastronomy research center was once a tool of Soviet spies.

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

"Only the devil could play golf here."

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

A top secret Cold War bunker hidden beneath a Latvian spa facility is now open for tours.