Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

One of the ghostly stops along Route 66.

The largest drain hole in the world.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

Quite simply the largest tree in the world (by volume).

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

San Francisco's newly reopened hands-on science museum.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The air force base preserves its scars from the Japanese attack on Pearl Harbor.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

North America's first frozen mummified remains of an ice age steppe bison, the 36,000 year-old mummy named "Blue Babe."

A trading post in the North Pole where children send letters.

A commemorative mural in this tiny Ballard park honors the neighborhood's rich Scandinavian ties, particularly with Seattle's Norwegian sister city Bergen.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

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

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

This historic steamboat is scuttled just a few hundred feet from where it was built over a hundred years ago.

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

Mountain known by the Tillamook Tribe as "the place of the supreme deity."

Two massive rock outcroppings on the Oregon coastline.

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