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

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

This bridge provides safe passage for squirrels.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

An extraordinary mixture of natural beauty and man-made phenomena.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

A self-built castle made by a mysterious man.

Climb to the top of the world's largest seated bronze Buddha.

A wall of chewing gum moonlights as collective art.

A giant Troll lurks under one of Seattle's oldest bridges.

This historic Victorian hotel has a scandalous history of affairs and murder.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

This expansive bridge in the Canadian wilderness was originally just built for friends.

The most famous location in China was home to whole dynasties worth of imperial rulers.

Giant relaxing Buddha in Malaysia.

Singapore's landscaping project is home to 18 incredible Supertrees.

An island in the middle of a lake, in the middle of a volcano, in the middle of a bigger lake, in the middle of a bigger island, in an archipelago, in the Pacific Ocean.

This striking, two-toned confluence of rivers is visible from space.

An Amazonian hotel is the ultimate treehouse and provides stilt based accommodation.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

High on a hill overlooking Los Angeles lives a world famous, high-power conical Tesla Coil.

Every inch of this chapel is covered in craftsmanship from across the world.

Be(w)ar(e) the moat around this historic Czech castle.