A walk through the historic city center, under the streets of Seattle.

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

This gold-winged spire celebrates the first true flight around the world.

The longest and widest floating bridge in the world.

The tiny church offers succor to travelers driving by, but only eight at a time.

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

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

Remember that scene in the Matrix, when Neo is in the big white room with all the weapons flying by? Well, this is what it would look like if he had wanted trees instead of guns.

According to legend, this rock represents a young girl trapped by an evil ocean spirit.

The steepest tramway in North America provides stunning views of the out-of-the-way Wallowa Mountains in northeastern Oregon.

A stunning landscape of bunkers that once stored chemical weapons.

The first North American landing spot for James Cook on his third voyage of discovery in the Pacific.

The only Native American museum along the Oregon Trail, run by the peoples who have lived on the land for generations.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

While it is not equipped to peer into outer space this observatory looks like it was built on the moon.

This natural marble cave is one of only five national monuments in Oregon.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

Despite a legend that says this highest peak in Oregon was climbed in high heels, scores of people have died on its slopes.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

100-year-old shipwreck you can walk up to at low tide.

A massive sea stack famous for its appearance in The Goonies.

Only known mainland rookery of the threatened Stellar sea lion.

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.