A plaque installed underwater marks the fall of a royal family from an imagined parallel universe—part of a globe-spanning art project.

The northernmost truck stop in the United States.

This super-sized statue is the only public memorial to the deal that ended America's neutrality during World War II.

Permanent exhibit reminds visitors of the Exxon Valdez.

A morbid gateway to an Alaska town prides itself on the hunting history it represents.

A suburban street in Anchorage doubles as a runway, and each home has its own airplane hangar.

The stickered marker pinpoints where the only maintained road in the United States crosses into the polar region.

At 238 feet above the bottom of a gorge this span is known as the biggest thrill on the road to McCarthy.

Buy your friend a drink or staple some cash to the wall for the next guy at the Salty Dawg Saloon.

A giant poultry statue immortalizes one of Alaska's more humorous town names.

While not recognized by Guinness, this chocolate waterfall is likely to be the world's largest.

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

A trading post in the North Pole where children send letters.

This frozen tunnel in central Alaska is both an engineering feat and a valuable climate classroom.

The ghostly remains of what was once the world's richest copper mine.

The king of U.S. high points towers over every other peak on the continent.

This whimsical stacked cabin looks like something out of a children's book.

The easternmost town in Alaska can only be accessed from Canada.

Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

An abandoned lighthouse awaits its destiny: being buried under shifting sand.

Plaques on its facade commemorate the Tiber's most destructive deluges.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

What was once England's second-richest abbey is now a haunting ruin.