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

This shrine to the patron saint of Alaska sits on a small tidal island and was built from the land’s own beach stones.

During the summer, surfers in Alaska take advantage of this inlet’s unusual water patterns.

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

The ruins of a town wiped out by the second-largest earthquake in recorded history.

The easternmost town in Alaska can only be accessed from Canada.

An Alaska livestock farm devotes itself to harvesting wool from creatures that once ran with mammoths and sabertooth tigers.

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

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

This historic collection of Native Alaskan artifacts was resurrected through a partnership between the WPA and tribal artisans.

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

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

The ruins of this Alaska gold mine form a gorgeous ghost town.

While not recognized by Guinness, this chocolate waterfall is likely to be the world's largest.

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

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

A trading post in the North Pole where children send letters.

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

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

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

World's largest college campus includes a wildlife sanctuary and a former movie set on more than 28,000 acres.

Bad farming practices caused this unnatural natural wonder.

They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.

The world's largest set of the ten commandments lay nestled in the heart of the Great Smoky Mountains.