Nature's biggest mammal swims in landlocked Oklahoma.

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

The first home of the doomed aviatrix Amelia Earhart.

A diverse, expansive nature preserve in northeastern Kansas.

Cannon designed to fire an atomic warhead.

Curious rock formations in a tiny Kansas state park.

A landscape of massive spherical boulders are the main attraction in this Kansas State Park.

One of the Eight Wonders of Kansas and the first official National Natural Monument these stark formations look like nature's Stonehenge.

The United States's largest hand-dug well is topped with a state-of-the-art museum.

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

The grandson of a Kiowa chief created what has become the iconic symbol of a city on the Plains.

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

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

This one-room cabin where the young colonel slept during the French and Indian War.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

The largest clock face in the United States is twice the size of Big Ben and infinitely more ad-sponsored.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

This colorful West Virginia cowboy greets passersby with a glassy stare.

This rural community has attracted both scientists and techno-refugees due to its federally-mandated lack of technology.

The world's largest fully steerable radio telescope.

The brainchild of Eleanor Roosevelt, her "Little Village" was a collectivist dream.

A well-preserved relic of the industrial age steel and iron works that dotted West Virginia.

Beyond the usual stories that attend old prisons, this one has deep bloody undercurrents.