This shallow pit was once used to send over 20,000 buffalo plummeting to their death.

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

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

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

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

Fascinating military history, awe-inspiring wildlife encounters, and endless outdoor adventures draw people to this sprawling park.

A decaying concrete oil tanker served as a disposal location for bootleg hootch.

The first declared National Monument in the United States.

This "little gallery in the middle of nowhere" is housed in a 170-year-old horse barn in the Missouri Ozarks.

Visitors flock to see this church tower's unintended feature: It happens to resemble a giant chicken from multiple points of view.

A collection of outdoor art by renowned muralist Robert Dafford depicts the history of a flooded city.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

You thought Santa Claus didn't exist, but it turns out you were wrong.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

An antique Beechcraft airplane serves as a giant windsock for people driving through the blustery open country of eastern Wyoming.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

An abandoned factory along the Mississippi coated by a giant mural.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

A cemetery housing wild west legends in South Dakota.

A Wild West jailhouse that slid down the mountainside.

South Dakota's oldest operating brewery is housed inside a historic firehouse.