Gorgeous cave resemble a winter wonderland.

A rare kind of blue bear can be found chiefly in the national park that shares their name.

The stunning remnants of this wreck emerge from an otherworldly backdrop of rainforests.

This vast, pristine wilderness is home to a rare subspecies of black bear.

The remains of the worst maritime disaster in the history of the "Graveyard of the Pacific."

Modern art meets modern convenience in possibly the world's most architecturally important public bathroom.

The last inhabitants of one of the U.K.'s most remote islands were evacuated in 1930.

Two massive boulders, rocking back and forth with the ebbing of the sea.

The largest lake in the Faroe Islands seems to be held hundreds of feet above sea level thanks to an optical illusion.

In Faroese legend, this sinister horse-shaped beast lures unsuspecting passersby only to drown them in the lake.

This remote island village was in danger of depopulating completely until a tunnel was built to connect it to the rest of the world .

A natural sandstone bridge hidden in the Sewanee forest.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

A mental health hospital dating back more than 139 years, now features a museum.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

One of the American Southwest's most extensive collections of Navajo rock art.

The hallowed remains of a 900-year old Ancestral Pueblo great house.

This towering volcanic plug stands out among the dramatic formations that dot this otherworldly desert valley.

The former home of the army detachment that captured Geronimo.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

It's easy to see why this eclectic architectural wonder has been dubbed the "Spaceship House."