One of the smallest towns in the United States.

A century-old cabin off of Highway 30 touts an unusual construction material: dinosaur bones.

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

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

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

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

An architect's childhood fantasy treehouse made real.

One man's ambition created this psychedelic log home.

The first declared National Monument in the United States.

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.

Cabins once lived in by Butch Cassidy and the Sundance Kid are featured at this Old West living history museum.

Before its closure in 2002, this South Dakota mine was the largest and deepest gold mine in Western Hemisphere.

This soaring sculpture and Sioux Falls landmark represents the leap of faith taken to make one's dreams come true.

This vintage train once gave new meaning to “swimming upstream.”

This towering wooden Sasquatch was carved with a chainsaw.

Despite monuments in other locations, this spot in a South Dakota field is recognized by the U.S. National Geodetic Survey as the center of the 50 states.

Seth Bullock, the sheriff of Deadwood, built this town immediately after Teddy Roosevelt’s death in 1919.

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

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

More than 7,000 gallons of water pour over these cascading red quartzite waterfalls every second.

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

An entire city block built completely out of petrified wood.

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