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

One home in the historic strip hides secret compartments and the ghostly songs of long-gone canaries.

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

New fungal and bacterial species call this deadly lake home.

One of the last socialist halls still standing in the United States.

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

A few dilapidated structures are all that remain of this deserted former silver mining town.

Native Americans built this circle of stones, which was used to predict astronomical events.

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

An entire town preserved as a historic landmark.

At the time of its completion, it was the tallest dam in the world.

The highest point in Montana is as rugged and singular as the state itself.

One man's ambition created this psychedelic log home.

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

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.

An architect's childhood fantasy treehouse made real.

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

The handsome statue is a tribute to the post riders who traversed 52 miles of tough Arizona terrain.

Once a bustling cotton factory, this early 20th-century building is now home to a thriving artspace.

Bananas are often left for the first monkey America ever recovered alive after being launched into space.

It may look like no more than a full-scale model, but every part of this full Space Shuttle stack had a working role in aviation history.

A propulsion engine testbed that paved the way for the Space Shuttle launch sits without recognition at this rocket center.

A graveyard of bathyspheres and diving bells paints a weirdly accurate account of ocean exploration's rickety history.