A precariously balanced rock perches on the edge of a cliff created tens of thousands of years ago by glacial erosion.

Walk through the sets of old western films at this small museum in Utah.

A recreation of an Old West apothecary full of curios.

A glimpse of a waterfall is reached by a steel catwalk along a slot canyon located in an Ouray city park.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

Twice a year, this road is closed off to allow for the migration of thousands of snakes, reptiles and amphibians between cliffs and a swamp.

Erosion and time have created a naturally-formed water park.

Giant granite rocks standing end-to-end like a train of circus elephants.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

The original vault that held the president's remains still stands, empty, not far from where he was finally buried.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

More than 12,000 years ago, this park was a playground for mastodons.

This former small town was destroyed not by the motor oil it sprayed the ground with but by the toxic waste that was added.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

Giant works of art interspersed throughout meadows and woodlands offer a new discovery at every turn.

Entombed in this strange, white stone hill are the deadly remains of radioactive weapons production.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

The eccentric and colorful pavilions of Tower Grove park are a beloved and overlooked symbol. 

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.