Ancient pueblos built into the base of a natural canyon wall.

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

See massive fossils that are over 200 million years old in northeastern Arizona.

Crumbling hotel echoes with the sounds of the '30s.

The "world’s largest honky-tonk" also has its own indoor rodeo arena.

Belly up to the bar in Cowtown, don't forget to buy some boots.

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.