A memorial dedicated to the victims of the Columbine High School shootings.

Where scientists keep miles of very valuable ice from Antarctica and Greenland from melting.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

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

The highest point in Iowa, while not that impressive to mountain states, has earned its own monuments.

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

The wreckage of a World War II bomber is hidden high in the Colorado wilderness.

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

The ravine where Jesse James supposedly performed an impossible jump to evade capture.

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

It is the only marker for one of the most famous hate crimes in American history. There are no other memorials for him in the entire state.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

One man's quest to save his town with a trail of record-breaking sculptures.

Long before guestbooks and hotels, frontier travelers signed their names on this rock face.

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

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

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

America's largest man-made forest was planted in an effort to bring back the past.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

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

A beautiful geyser under environmental threat.

A scenic ravine with an astounding collection of rock art created by the Indigenous people of the Great Plains.