This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

One small town in the Pacific Northwest transformed itself into a Bavarian-themed tourist destination.

This exaggerated sculpture resembles a well known feature of Vancouver:

The supreme shrine of the state.

A symbol of hope, survival, and national character, especially after it rose phoenix like from the flames.

Swim in these hot springs filled with three-million-year-old water, deep in the Australian Outback.

Hawaii’s largest cemetery rests inside an extinct volcano crater.

A glass display case holds the document that ended the Second World War—which one person signed on the wrong line.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

The first permanent memorial to a unique secret weapon of World War II.

In this small Phoenix taxidermy emporium, you can find everything from a squid in a jar to a freeze-dried toad.

This oversized flute-playing Ancestral Puebloan deity is also a landmark of Southwestern kitsch.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

A planet-hunting astrograph built in the 1920s to seek out the so-called "Planet X" beyond Uranus.

The wreckage of a deadly bomber plane crash can still be found near an Arizona peak.

At 11,500 feet in elevation, there is no toilet in the state closer to the sky than this one.

A house carved into a rock in the 1940s.

Take a monster truck tour around an ostrich farm in the middle of the desert.

Sleep where gangsters fell amidst smoke and flame, with nary a bullethole to show for the legendary struggle.

Nothing to see here.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

Though considered an eyesore by some, this boxy Brutalist high-rise plays a significant role in Sydney's past.

A 19th-century perch for spotting sailing ships now boasts one of the most iconic views in the Southern Hemisphere.