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

The site of one of Japan's very few American occupations during World War II still holds the relics of a roundly disastrous campaign.

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

The facade of this relic from the Klondike gold rush is decorated with over 8,800 pieces of driftwood.

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

A classic gold rush hotel can be expected to pick up some ghosts along the way, and the Golden North is no exception.

A historic freight system that found the true gold rush is in tourism.

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

Massive mounds of golden sand look like a desert landscape randomly plopped in an Arctic forest.

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

This ghostly Alaska village still clings to a steep cliffside despite having been abandoned for over 50 years.

This WWII-era military installation once held an entire city within its walls - now, its walls are falling down.

Colorful boxes placed over the dead are left to rot and crumble.

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

This whimsical stacked cabin looks like something out of a children's book.

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

What better place to take a seat?

These ruins are all that's left of the former Alabama State Capitol.

Inside this small brick bungalow is a collection of toys intended for the afterlife.

You'll need cowboy boots to trek to this old-fashioned saloon nestled in a giant natural cave.

This small hut in the middle of a parking lot was once the wooded sanctuary of the 'Hermit of Montrose.'

A collection of huge Pre-Colombian structures in Alabama.

What else would you call a playground hidden in Alabama's oldest and largest cemetery?

Orr Park's dead trees have been carved into a menagerie of whimsical visages.