The remains of the first public diamond mine in Arkansas.

The warmest cave in the Ozarks features two seemingly bottomless lakes.

Giant papier mache hog sits on private property.

This century-old roadside attraction is full of bizarre rock formations.

The only diamond mine in the world where you can keep what you find.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

This restaurant serves wood-fired fare served in a natural cave with a live spring.

An extravagant western hotel where every floor is the "ground floor."

This monumental Jesus is often referred to as "Our Milk Carton With Arms."

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

The house where the famed outlaw was shot by a dirty coward is now a museum to the criminal's legacy.

Giant works of art interspersed throughout meadows and woodlands offer a new discovery at every turn.

Home with Gothic windows featured in a famous painting.

Less a museum than a bizarre fantasy world created by artists and engineers.

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

The world's largest man-made underground caverns offer unparalleled underwater wonders.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

A new kind of theme park for adults off the Las Vegas Strip.

Inside this small museum resides a strange mix of miniature collections passed down over time.

This is one really big nut.

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

A museum dedicated to the alleged Roswell Incident.

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