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

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

An architect's childhood fantasy treehouse made real.

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

One man's ambition created this psychedelic log home.

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 museum, walk-through diorama, and library nestled under one castle-like roof.

The final resting place of the Hunkpapa Lakota leader Tatanka Iyotaka, commonly known by the English translation Sitting Bull.

Dedicated to the history of the 1,000 nuclear missiles that once covered the Great Plains.

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

A fitting attraction for the corn capital of the world.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

This stone, said to have once been a young woman, is sacred to the Dakota and Lakota nations.

Part of a secret 1970s nuclear defense program is now open to the public.

A boulder so big and tough, they had to turn it into a landmark.

For over a century, it has been a tradition to raise a flag at the top of this 450-foot sandstone pillar on the 4th of July.

On the edge of grassland in northeastern Colorado, these rock formations are some of the few remnants of a high plain that has eroded away over millions of years.

This small piece of railroad history sits behind the parking lot of a chain grocery store.

Two tall rocks sit at the center of this site, once the home of a large Ancestral Puebloan community.

Travel through the wholesome amusements of yesteryear at this charming miniature village.