Medicinal spa created with the discharge from a geothermal energy plant.

Clean, cold drinking water flows from a nondescript pipe in a roadside rock face.

The remains of the first saint from Alaska in the Russian Orthodox Church.

Buy your friend a drink or staple some cash to the wall for the next guy at the Salty Dawg Saloon.

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

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

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

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

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

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

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

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.

Four-story concrete hotel never opened to customers.

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

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

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

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

Mind-blowing carvings and fantasy ice scenes grace the largest year-round ice environment in the world.

The 15-foot-wide, 2-ton pan fries hundreds of chickens once a year.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

The fine fabric handwoven at Biltmore Industries was once coveted around the world.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.