The longest continuous lava tube in Oregon.

Treehouse motel and treehouse-building school.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

An art instillation for the sake of "raising vibrations."

North Carolina's finest examples of Native American pictographs have survived for 5,000 years.

An abandoned bait shop with a front lot filled with storage boxes.

The remains of the iconic train crash from the movie The Fugitive can still be found rusting along the Great Smoky Railroad.

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

A museum and doll store featuring a surreal and super sanitized version of where babies come from.

Where school buses go to die and be reborn as whimsical works of art.

A curious whirlpool formation supposedly capable of entangling or engulfing branches, tree trunks, or whole rafts full of hapless tourists.

An unfinished rail tunnel that has since been used to house cheese and bats.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

This abandoned fishing settlement may well be the greenest village in the world.

A part of the world's largest marsh seems to be growing bright red Martian grass.

A steaming, boiling hellscape sources Hokkaido's thermal baths.

This mountain's identity is stuck somewhere between a nightmare and a scenic tourist attraction.

The magical, mossy forest that inspired Princess Mononoke.

The tallest bronze seated statue of the Buddha in Japan.

Once the most densely populated place in the world, this island is now a ghost town.

A sobering scientific reminder of the human damage caused by the advent of the nuclear age.

Giant art made in Japanese rice fields.

A disconnected rotary phone for "calling" lost loved ones offered a unique way of dealing with grief in disaster-stricken Japan.

This town near Nagasaki is flecked with fruit-flavored bus stops.