This small museum tells the story of Fort Worth's first and largest superstore.

A Texas museum filled with Broncos and Betties.

The man who wasn't there.

A modernist landscape of water and sci-fi concrete.

A museum dedicated to the alleged Roswell Incident.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A spring-fed pool so deep it's used for scuba diving as well as swimming.

Why walk on this historical site when you can zoom down instead?

Ming Dynasty necropolis raided during the Cultural Revolution.

Home to over 200,000 artifacts, this museum attempts to guide visitors through the ancient history of Beijing and Imperial China.

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

The northernmost international land border crossing in the United States.

This remote fort on the Yukon River is a vestige of the wild Alaska gold rush.

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

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

North America's first frozen mummified remains of an ice age steppe bison, the 36,000 year-old mummy named "Blue Babe."

Four-story concrete hotel never opened to customers.

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

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.

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

The northernmost truck stop in the United States.

This gravelly, dangerous highway is the only road in the United States that leads to the Arctic Ocean.

The "Gateway to the Arctic" connects Barrow's indigenous population with the sea and its traditional industry: whaling.