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

A rare tour of a commercial jet assembly plant, held inside one of the largest buildings in the world.

The illuminated falls are a gem in North Cascades National Park.

This sci-fi gazebo located in a Washington power town is made from old bits of industrial electrical equipment.

The residents at this Yellowstone wildlife park will certify your cooler as "bear-proof."

Spectacular views await visitors to this lake.

This rustic old building is said to be the most photographed barn in America.

The first declared National Monument in the United States.

This shallow pit was once used to send over 20,000 buffalo plummeting to their death.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

Every president in history is immortalized in bronze in downtown Rapid City.

One of the first intercontinental ballistic missile sites in the United States.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

Dedicated to the history of the 1,000 nuclear missiles that once covered the Great Plains.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

Just a man taking his prehistoric pet for a stroll.

A fitting attraction for the corn capital of the world.

A roadside collection of over-sized iron creations that are a bit more macabre than most.

An obelisk commemorating Lincoln's role in connecting the coasts.

The world's only three-story rotary jail is now a museum to a bizarre trend in prison design.

Manatees congregate around a power plant's discharge canal where the water is especially warm.

The land is home to swimming ponies and a legendary 18th-century treasure.