One of the world's largest automobile junkyards is a unique landscape of metal and moss.

A futuristic temple of light uses prisms and rainbows to create an atmosphere of peace.

A giant cement churn carries the legacy of American resilience, unity, and greed.

This little gem of a museum is a hidden jewel filled with prehistoric treasures.

Underneath downtown Lincoln resides a network of caves that was also the city's first brewery.

The largest earthwork effigy in the world.

One of the largest carillons in the world, this giant instrument has 67 cast-iron bells played by a keyboard.

A single artist is behind these large-scale models made of hundreds of thousands of two-inch wooden matchsticks.

Beating out all other concrete competitors, this massive garden feature's pointy hat has earned it a world record.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

Visitors to this museum will uncover a whimsical collection of marbles from across time.

The ravine where Jesse James supposedly performed an impossible jump to evade capture.

A fitting attraction for the corn capital of the world.

An environmental art installation inspired by farmhouses and crop circles.

A century-old cabin off of Highway 30 touts an unusual construction material: dinosaur bones.

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

Abandoned businesses, homes, and rusted cars are all that remains of this stopover town.

The only retired U.S. nuclear missile silo that is open to the public.

Two insane asylum bodies embalmed by an amateur.

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

A small Richmond island dotted with the remnants of hundreds of years of history.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

Enormous lake at the bottom of a unique cave system.