This red-eyed chrome beast pays homage to the popular modern myth of West Virginia's insectoid monster.

Destroyed by flood waters, prison now serves as a training ground for armed forces.

Curious cave that stays a cool 56 degrees all year long.

Rusted and decayed, this former mining site is a portal to the past.

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

In the St. Francois Mountains in the Ozarks at 1,772 feet above sea level, Taum Sauk Mountain is the highest (and possibly oldest) peak in Missouri.

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

An average of 33 million gallons of water pour out of the collapsed cave at the heart of this spherical spring.

The largest dinosaur trackway in North America is tucked away among this canyon's ghosts and archaeological gems.

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.

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

This structure among the trees was the result of divine inspiration.

The world's longest known cave system.

In the Shawnee National Forest, amazing rock formations peer through the treeline.

Home of an evil witch famous within southern folklore.

A cabin completely covered in coffee mugs, where visitors are welcome to leave one of their own—if they can find an empty nail.

You can find America's highest suspension footbridge at Grandfather Mountain in North Carolina.

A mountaintop space observatory that is certified dark.

Carrying on the legacy of a short-lived experimental school tucked away in the mountains of North Carolina.

This rare basilica nestled right in downtown Asheville is an architectural marvel, inside and out.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

Perhaps the oldest vine in North America, this sprawling plant helps make a sweet wine.

Strange physical sensations and optical contradictions keep visitors coming back for more.

This shallow cave got its name from copious amount of human bones found inside.