A beautiful geyser under environmental threat.

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

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

This mining town boomed in the Atomic Age when uranium was gold, only to be abandoned when the industry collapsed.

This erect, phallic geological spire wasn't always named so domestically.

A devilishly named gorge that was a sign of salvation for many pioneers.

A popular rock that acted as a waymarker for American pioneers.

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

One of the first intercontinental ballistic missile sites in the United States.

The first declared National Monument in the United States.

This holy site either displays a centuries-old cross or a complete fake.

This remote river crossing was a popular campground on American westward expansion trails, and a former Pony Express station.