An architect's childhood fantasy treehouse made real.

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

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

A beautiful geyser under environmental threat.

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

An apocalyptic seismic event creates a deadly chain reaction that ends with a 6-mile long lake developing within weeks.

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

An entire town preserved as a historic landmark.

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

New fungal and bacterial species call this deadly lake home.

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

For thousands of years, Native American hunters drove buffalo straight off this cliff in Montana's Yellowstone Country.

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

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

See the computer’s history revealed over the course of 20,000 years.

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

This record-setting hydraulic dam in the Montana badlands was one of FDR's most ambitious public works.

This downtown Dallas art installation is always on the lookout.

Tracks near this Texas nature site were once thought to support the Creationist belief that man and dino coexisted.