The "Seinfeld" diner.

The moving metal works of one troubled artist can still be viewed on his front lawn... for now.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

The only arched bridge made of stone on the entire Mississippi River.

Secret hideaway for an alternative beach experience.

The only road through the heart of Glacier National Park.

Roadside collection of 65,000 signs.

The northernmost international land border crossing 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.

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

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.

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

Siberian husky that delivered a life-saving antitoxin.

A boulder carved into the shape of the cosmonaut's head.

A huge communist-era propaganda monument and mural that offers stunning views of the Mongolian capital.

A nondescript dirt lot hides an intriguing center of shamanic healing.

A beloved tribute to the Fab Four and the freedoms they inspired.

An exceptional assortment of fossils recovered from private collections.

A uniquely authentic display of traditional Russian culture.

The mummified remains of Dashi-Dorzho Itigilov, Russia's most important Buddhist.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

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