The contents of this safe survived a 37-kiloton nuclear bomb.

D.C. once had its own tiny rival to the New York Stock Exchange.

There are eight natural springs around town, each with a slightly different taste.

A famous hotel houses an impression collection of mini dioramas and giant doll houses.

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

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

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

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

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

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

A tourist attraction founded around a slumping cabin.

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

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

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

This nine-story building is the oldest standing skyscraper in D.C.

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

The Pentagon is so large that it was planned like a city, complete with internal highway infrastructure.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

A museum dedicated to exhibiting remarkable outsider art.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

There are lots of hands and feet stamped in the cement in front of Grauman’s Chinese Theater, but Mel left behind something extra.

Historic funicular railway, believed to be the shortest railroad in the world.