No one knows how this Pacific Northwest spruce tree came to have so many trunks.

Approximately 50,000 gallons of water gush from these springs, creating the Metolius River.

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

The longest continuous lava tube in Oregon.

A volcanic landmark located on an Ice age lake bed.

Massive crater in central Oregon.

This large maar crater in Oregon is the bigger brother to Hole in the Ground.

Eat like a "buckaroo" at this remote restaurant.

A volcanic fissure over two miles long and up to 70 feet deep.

New Plymouth, Idaho is the only U-shaped town in the United States.

A small section of Boise, Idaho maintains the unique culture and traditions of the Basque people.

An impressive waterfall nestled in the cliffs of Idaho's Snake River Canyon.

One of the "twins" in these falls on the Snake River was sacrificed for hydropower generation in the 1930s.

Dozens of rockets and missiles are on display outside a testing facility in the Utah desert.

Jurassic Park—A Still Life.

The last SR-71 ever constructed.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

In 1952, this restaurant began selling the Colonel's “secret” recipe.

Incredible sculptures inspired by obscure passages from the Bible.

One of America's largest retail chains got its start in one of its most remote rural destinations.

Named for a prominent scout and explorer, this Wyoming state park encompasses a replica of an 1840s trading post, a 19th-century Army outpost, and early 20th-century automobile lodgings.

This prison-turned-museum is a remnant of the Old West's grizzly, violent past.

The first railway tunnel to cross the Continental Divide and, at 11,523 feet, was once the highest railroad tunnel in the world.

This nearly abandoned town was once a thriving mining community until a series of fires.