This museum showcases the history and contributions of the U.S. Army to the medical industry, both on the battlefield and off.

What was meant as an innocent piece of art has earned a reputation as the "mansplaining sculpture."

The saga of the massive nut begins and ends in Texas.

This unlicensed collection of fast-food memorabilia sits on the site of the first ever McDonald's restaurant.

This strangely vacant Western amusement seems to be an empty tribute to residents of Lucerne Valley.

Other-worldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

Everyone and everything one man ever loved and lost, now stare into the East for all eternity.

Instead of becoming a power plant, this abandoned complex became a massive letdown.

Famous for its bio-luminescent inhabitants, known as "Dismalites" .

This "Plant Farm Museum" is home to the divinely inspired and visionary outsider artwork of Reverend Howard Finster.

Enormous lake at the bottom of a unique cave system.

A key producer of charcoal iron in the early 1800s, the structure still stands today.

The world's longest known cave system.

Crumbling Kennedys and a decaying Tecumseh are just some of the haunting remains of one man's cement art trail.

Home of an evil witch famous within southern folklore.

The first full-scale tunnel built in America is short but scenic.

Visit this playground of waterfalls, caves and sinkholes.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

This award-winning men's bathroom was just too beautiful to not allow women to see.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

The small cave that housed Tennessee's "first citizen."