One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

A classic carnival ride that was carved to be untouchable.

The shortest river in America flows for just 201 feet.

A smoke stack so large, the Washington Monument could fit inside!

Modeled after a famous church in Vienna, Austria—but in Helena, Montana.

A small Montana town commemorates the dog who waited at the train station every day for his owner to return.

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

These giant metal horses graze on a hilltop near the Montana highway.

The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.

This giant meditative chakra sits peacefully in the Flathead Valley of western Montana.

New fungal and bacterial species call this deadly lake home.

The mayor made the declaration in 2004.

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

A wild west land agreement was etched right onto this historic Idaho stone.

These black pillars of volcanic basalt seem to call mountain climbers with an unbreakable siren song.

One of the largest trees of its kind in California.

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

The hundreds of movies and television shows shot in this high desert town are commemorated in a unique museum.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

"Only the devil could play golf here."