A nearly 200-year-old Catholic mission built to serve the native people of Idaho.

The mayor made the declaration in 2004.

This trail leads to a mine that was used as a sanctuary during the Great Fire of 1910.

A miner's handmade folk art fountains are tucked in the woods off a multilane highway. 

Cross the Continental Divide through an old railroad tunnel, and ride back to the top on a shuttle.

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

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

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

No Gordon Lightfoot song, only a barebones monument to greed.

Around half a million years ago, these magnificent columnar basalt cliffs were formed from cooling lava.

A 6-mile-long lake created by an apocalyptic seismic event and the deadly chain reaction that ensued.

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

A metal menagerie fills the yard of this museum and gallery, the work of Montana artist Bill Ohrmann.

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

This off-the-beaten-path abandoned town is a relic of Montana's silver mining boom.

This cemetery is one of the last remaining traces of a drowned old Western town.

The old fire tower is one of the last of its kind in the United States.

Between Missoula and Spokane, a family-owned travel center has an unusual museum in the back.

The tallest dam in Montana and top 10 in the country.

The only road through the heart of Glacier National Park.

Natural rock water slides hidden in the remote forests of northern Idaho.

'Cause the fence start shaking, the earth was quaking.

Built by the inventor of the radio, this abandoned hotel has housed early radio employees, military men, and a dangerous cult.