The source of America's longest river is also a historical landmark and the start of a famous nude run.

What if the cure for all that ails you was as simple as repeated exposure to low-dose radon?

Crystal clear, drinkable mountain spring water by the side of the road.

Spectacular views await visitors to this lake.

A sprawling museum located on the former site of the Orphan Girl Mine.

A working ranch doubles as a sustainable hub for world-renowned classical music and large-scale sculptures.

A collection of huge, site-specific sculptures sitting in the Montana woods.

High in the Rockies the third largest statue in the U.S. opens her welcoming arms, and lights up the night sky.

An entire town preserved as a historic landmark.

A scenic ravine with an astounding collection of rock art created by the Indigenous people of the Great Plains.

A little-visited ghost town state park offers a glimpse into Montana’s "Silver Queen."

This beautiful ancient site is dotted with perforated sandstone pillars considered sacred by some Native American groups.

The only road through the heart of Glacier National Park.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

This amazingly preserved Gold Rush town is a historian's dream.

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

This set of hot springs also comes with fantastic views.

A creek tumbles over a series of step-like rocks to create this scenic water feature.

This hiking/biking/horse trail along an old railroad grade features trestles, tunnels, and a roadless stretch through the scenic Susan River canyon.

California's largest steel arch bridge.

A tunnel that brings more than a century of history to life from the deepest parts of the Niagara Gorge.

Detroit housing collective working to create an "environment for revolutionary change."

Take a drunken tour inside the world's largest known geode.

A Northwoods sporting competition that shows lumber jacks doing much more than cutting down trees.