The only road through the heart of Glacier National Park.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

A classic mystery spot complete with spots that are said to make you shrink or grow when you stand on them.

A scenic ravine with an astounding collection of rock art created by the Indigenous people of the Great Plains.

The residents at this Yellowstone wildlife park will certify your cooler as "bear-proof."

"Polynesia on the Plains."

This beautiful ancient site is dotted with perforated sandstone pillars considered sacred by some Native American groups.

This giant meditative chakra sits peacefully in the Flathead Valley of western Montana.

New fungal and bacterial species call this deadly lake home.

The only remaining sod house Oklahoma built by a homesteader in 1894.

Behind the Cowboy Hall of Fame is a burial ground for good horses and a famed rodeo bull.

An oil baron's wild paradise and the winner of an ill-fated air race.

A museum and apothecary garden devoted to the history of frontier medicine.

Over 50 historic windmills whir away at this outdoor museum.

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

Only museum dedicated to women pilots, with personal artifacts from Amelia Earhart and other aviatrixes.

An old spiral fire escape dangles above a public courtyard in Midtown Oklahoma City.

Tucked away on an empty wooded lot in suburban Oklahoma City lie the remnants of an abandoned circus camp.

The world’s largest combined collection of U.S. and Russian aircraft got its start in a poultry building.

The oldest purpose-built cinema still in operation also houses a museum of movie memorabilia.

This Italianate Villa-style castle is pretty to look at, just keep off the private property.

The first home of the doomed aviatrix Amelia Earhart.

Self-built house and sculpture park where the creator can still be seen in a glass coffin.

These elevated trucks were put in place as a middle finger to The Man, but are now considered folk art.