Considered by many to be one of the most dangerous highways in Alaska.

The building features one of the last remaining free-floating spiral grand staircases in the U.S.

Site of the greatest known waterfall that ever existed.

People come from across the globe to swim in this lake believed to have healing properties.

This dilapidated ship carcass covered in trees is a striking sight.

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

A surreal landscape where fanged rocks rise from the ground and the ocean feels like a great mystery.

This former coal gasification plant found a curious second life as a popular public park.

Rustic natural hot springs in the deciduous rain forest.

Stroll through a wonderland of stupendous moss-covered trees.

A beautiful footbridge with over 2,000 glass sculptures along the walls and ceiling.

What's that on the side of that building? Va Va Voom, it's Bettie!

The highest point in Washington state is a volcano covered in glaciers.

Nevada's largest cactus collection stands outside a candy mogul's small factory.

The longest and widest floating bridge in the world.

Not far from Mount Rainer, an iron wonderland claims the landscape.

"The Reptile Man's" very own roadside zoo features an albino alligator.

One small town in the Pacific Northwest transformed itself into a Bavarian-themed tourist destination.

Native American burial mounds? Giant gopher dens? No one knows what created the Mima Mounds.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

Shoreline strewn with the remains of ghostly fallen trees.

The illuminated falls are a gem in North Cascades National Park.

This Seattle joint serves food inside an old train car once used by FDR.