A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

This sculpture perfectly models the molecular structure of a drug that was never produced.

This southwest-styled home in Santa Fe claims to be the oldest house in America thanks to an ancient bit of foundation.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

The 7,000-year-old calcium carbonate formation creates a magnificent natural bridge.

A roadside attraction filled with an astounding array of gloriously wacky vehicles.

A research lab and hands-on museum where visitors can experiment with retro technology.

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

Storage units with a wartime past.

When ecosystems collide in the arid Southwest.

Even in death, he's still your huckleberry.

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.

See six states from the newly restored 100-year-old historic roadside attraction.

In the early 1900s, hundreds of Black Americans found opportunity in this now-abandoned rural community.

This enigmatic building features numerous architectural styles.

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

Central City celebrates its most famous madam by racing beds down Main Street.

A Rocky Mountain city provides a happy ending for a pinto pony and his Brobdingnagian red chair.

A small Wyoming town is home to the state's oldest-operating soda fountain.

A monument to the egos of two railroad magnates that fell into decline along with their careers.

Steel remnants of a bridge make up a unique sculpture along the banks of the Illinois River.

These Depression-era WPA sculptures have made a couple of stops over the years.

The home for all things Kool-Aid offers everything except a chance to actually enjoy the drink.

These experimental weapons brought World War II to Nebraska as well as 26 other U.S. states.