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

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

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

A famed drink seasoned with an amputated toe, now on its tenth digit.

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

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

A hulking remnant of Alaska's industrial gold mining boom in the 1920s.

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

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

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.

This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

The curiosities and wonders of pharmacy in a delightful historic building.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

The world-record holder for the longest bridge stretching continuously over water.

A 19th-century Gothic, castle-like statehouse by the Mississippi River.

This sculpture may be the only known depiction of a man who helped finance the American Revolution and inadvertently created the dollar sign.

The water in this preserved area spawns vegetation that gives it a deep green color.

This patch of land is home to Sweden's largest burial mound, allegedly belonging to a mythical king.

This 2,000-year-old stone maze is one of the oldest in the country, but its purpose is still a mystery.

It houses the remains of a 17th-century version of the Titanic.

This pair of unsuspecting buildings are in fact the very first modern skyscrapers in Europe.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

An extensive collection of reliquaries containing the bones of saints housed in the largest Catholic church in Venice.