A toxic ghost town sitting atop a massive coal fire.

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

A bust of the first president welcomes visitors to the only town in America called George, Washington.

Nuclear reactor created the plutonium used on Nagasaki.

This inanimate goat created by the "welding nun" has been helping to clean up the city of Spokane for more than 40 years.

Eclectic collections, artwork, and some feline friends fill the writer's former home.

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

Hollowed out cedar log tubs set in an ancient towering forest.

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

Massive crater in central Oregon.

Site of the greatest known waterfall that ever existed.

Train debris from the deadliest avalanche in United States history can still be found in the ravine where so many perished.

Activists are fighting to preserve these unfinished highway ramps as a tribute to the citizen revolt that halted their construction decades ago.

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

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

The strange phenomenon causing gravity to "work backwards" on this hill has been blamed on the paranormal.

A bike being "eaten" by a tree is the real Vashon legend behind popular children's book, "Red Ranger Came Calling."

This lake in the Cascades lives up to its name, disappearing down a hole every spring.

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

The remains of a former logging boom town, crumbled away in the forest.

A plaque commemorates the spot in the Oregon woods where the first-ever Geocache was hidden.

Is this the most Portland place ever?

Featuring a casually threatening atmosphere along with dessert and coffee to die for.

Beyond being incredibly fun, not much can be said about the Hole with certitude.