This landmark vessel dry-berthed in Tacoma's harbor served in emergencies and ceremonies for more than 50 years.

A large wind turbine installation in central Washington State is home to an extensive set of interpretive exhibits.

Standing 191 feet tall and measuring more than 55 feet in circumference, this is the world's tallest spruce tree.

Tacoma's historic Beaux-Arts train station is now a federal courthouse featuring large-scale glass sculptures by artist Dale Chihuly.

This tree has witnessed nearly 1,000 years of history.

This impressively large collection includes crackers shaped like Jimmy Carter, Mickey Mouse, and more.

This grove of ghostly cedars was killed in 1700 by an enormous tsunami, felt from the United States to Japan.

Twin Peaks' real life Double R Diner has been restored to its damn fine television look.

Only ruined buildings and abandoned charcoal kilns remain of this once bustling Wild West boom town.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

Rippling sand dunes frozen in the Arizona rock.

A mining camp built around an unexpected occurrence of silver.

The beginning of the historic Iditarod Trail connecting the Alaskan cities of Seward and Nome.

A hulking remnant of Alaska's industrial gold mining boom in the 1920s.

This super-sized statue is the only public memorial to the deal that ended America's neutrality during World War II.

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

This gravelly, dangerous highway is the only road in the United States that leads to the Arctic Ocean.

A suburban street in Anchorage doubles as a runway, and each home has its own airplane hangar.

The stickered marker pinpoints where the only maintained road in the United States crosses into the polar region.

Four-story concrete hotel never opened to customers.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

The king of U.S. high points towers over every other peak on the continent.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

A gothic church spire sits atop this skyscraper, the tallest church in the world.