An acoustic anomaly with a mysterious cause.

A half-size replica of the World Trade Center towers above Tulsa.

Standing at 21-feet tall, this space cowboy adds to the legacy of Route 66's muffler men.

Its incredible collection preserves 170 years of sewing machine history.

These massive mitts are made of 30 tons of devotional bronze.

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

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

Where animatronic singing fish go to retire.

Everything in this miniature world was handmade from matches, paperclips, wires, tin cans, and other everyday objects.

Nature's biggest mammal swims in landlocked Oklahoma.

To honor his gardening wife, this yard artist turns bowling balls into playful, colorful sculptures.

This historic folk art garden contains a nightmare tower that claims to be the world's largest concrete totem pole.

Claims to be the "World's Highest Hill."

Town not known for anything except its strange name.

This historic bridge has weathered fires and floods and still stands, now abandoned, where it has stood since 1874.

A large stone map of Arkansas awaits visitors to its highest point.

At a site that has witnessed many significant events, according to the fictional Kcymaerxthaere, it is best known as the place of lunar discovery.

The granite monument is engraved with the image of the talking horse's head coming through a barn door.

The Bucyrus-Erie model 1850B electric shovel, or "Big Brutus," the largest existing electric shovel in the world.

Peak named for an old man who liked to run in the nude.

Collection maintained by the legendary designer.

A mysterious drive-in nestled in the forest that leaves little to the imagination.

The remains of the first public diamond mine in Arkansas.

A wild trout fishery in Arkansas.