This mile marker stands at the unofficial end of a highway built to defend the United States from a Japanese invasion during World War II.

Once the center of Gold Rush mania, now the starting point for the Yukon Quest sled dog race.

The sculpture's largest spire points directly toward the North Star.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

This abandoned mine offers a glimpse at what life was like for those who came to Alaska seeking Gold Rush riches.

Four-story concrete hotel never opened to customers.

A copy of the famous bus used during the filming of 'Into the Wild' is on display at an Alaska brewery.

The now-serene site of the largest earthquake ever recorded in North America.

Between Missoula and Spokane, a family-owned travel center has an unusual museum in the back.

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

A research lab and hands-on museum where visitors can experiment with retro technology.

A parade of antique steeds offers a quirky ride through history.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

A spiritual vortex among the red rocks in Sedona.

Two large-scale sculptures of Adam and Eve greet visitors in the nude at the Time Warner Center in NYC.

This impressive scene portrays the elusive forest giraffe of Central Africa.

This Swiss cemetery is reserved for people who died in climbing accidents.

Odd outsider art installations surround a Gold Rush-era ghost town.

The most magnificent bottle house in a town strangely full of them.

A land of debatable treasure.

Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

A Wild West saloon that helped define a generation of psychedelic rock.

This beloved cheeseburger-slinging trailer holds Nashville's oldest beer license.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.