No one knows how this Pacific Northwest spruce tree came to have so many trunks.

This frequently-photographed waterfall takes only a short hike to visit.

The seamy, underground secrets of Portland's criminal past.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

On the Oregon coast there is a natural hole that seems to be draining the sea.

World's largest collection of serial killer artwork and other macabre exhibits.

A psychedelic labyrinth on the San Francisco bay.

This unusual rock formation looks like an apple that has been neatly sliced in half.

These phallic stone spires once served as Tolkien's Paths of the Dead.

A galaxy of glowworms—larvae of a gnat—hides deep in the belly of these caves.

The glacier tucked within a New Zealand rainforest.

This strange geological landscape erupts with sudden bursts of water.

A Maori village obliterated by an 1886 volcanic eruption.

A glacier pocked with ice caves and surrounded by rainforests.

Known for the tunnel that leads visitors to the water.

This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.

A solitary tree has grown up all alone on Lake Wānaka, backdropped by the beautiful Southern Alps.

The Dalai Lama named this New Zealand landscape the "Spiritual Center of the Universe."

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

Tubing through a cave lit with glowworms is a magical underground experience.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.