Modeled after a famous church in Vienna, Austria—but in Helena, Montana.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Steep canyon walls hide a forested oasis in the West Texas desert.

The state bird of New Mexico, constructed entirely out of garbage.

A museum dedicated to the alleged Roswell Incident.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

A natural formation that resembles a camel resting in the New Mexico desert.

The farm toy capital of the world hosts a museum filled with toy tractors dating back to the late 1800s.

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

The remains of a bustling turn-of-the-century park built to showcase the wonders of electricity.

For just a few bucks, this Iowa funicular will let you feel like an 1800s fat cat.

This long unused shot tower on the Mississippi remains a point of pride for a small city in Iowa.

The oldest continuously occupied public building in the United States.

This giant pocket watch is the third iteration of a local landmark that has been standing just off the Santa Fe Plaza for over 100 years.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

Life-sized sculpture of a blue whale made of hand-recycled plastic trash.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

Home to New Mexico's longest bar, this watering hole also has a mining museum and a haunted history.

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

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

An abandoned amusement park based on the popular 1940s Red Ryder comic strip.