This three-mile concrete levee in Pueblo, Colorado was transformed into the world’s longest painting.

It would be easy to walk past this unusual piece of art and have no idea it pays tribute to the odd life of a real chicken.

This marker identifies the location where three states converge.

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

A prehistoric rock shelter that's literally in someone's backyard.

This now-abandoned outcrop is an important Native American spiritual site, overtaken by European settlers and mining pollution.

This nearly abandoned town was once a thriving mining community until a series of fires.

A hotel with a rich Wild West history of miners and bootleggers.

The site where a nuclear bomb was lowered over 8,000 feet underground and detonated as an experiment in natural gas extraction.

A stark reminder of the huge nuclear weapons plant that once stood on the site and its effect on the surrounding area.

An eclectic collection of artifacts from the Wild West is preserved in a remote fictional pioneer town.

The burial grounds of a secret society includes fences topped with fake Tesla balls.

The final resting place of a 19th-century gold prospector and convicted cannibal.

Two creeks flow out of either end of this canyon in opposite directions.

The world's largest sticker ball weighs in at a mighty 231 pounds.

A coal fire has been burning underground here since 1896.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

A small store filled with animal skulls and other curiosities.

A fake mine that was made using real mining techniques which is also used as a community center.

This was once the home of Gahan's Saloon, Denver's most storied speakeasy.

The site of the "Bone Wars" between two rival paleontologists during the dinosaur rush of the 19th century.

A multiversal transit station located right below a highway interchange.

According to local legend, a tree grew from the stake that killed this alleged vampire. In reality, he probably died from influenza.

At one time this small mining village was the highest town in America but now it sits abandoned while the mine churns on.