Nature's biggest mammal swims in landlocked Oklahoma.

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

A whimsical tower with a spiral staircase, inspired by the Space Age and the Möbius strip.

A mysterious and terrifying public art goblin seemingly meant to inspire local legend.

A unique attraction and museum dedicated to exploring iconic roadside structures.

A Kansas grassroots sculptor decorates the local roadways with his sculptures made from found objects.

European castle ruins in an American state park are actually the product of death and grief.

It's big, it's a ball, and it's made of twine—the world's largest of its kind.

Home with Gothic windows featured in a famous painting.

This pristinely abandoned filling station on the edge of a graveyard is populated solely by unsettling mannequins.

Another in a long tradition of legends regarding infernal seats.

A museum devoted to osteopathy and its creator, Andrew Still.

An idle pastime becomes a record holder in Boys Town, Nebraska.

The world's only three-story rotary jail is now a museum to a bizarre trend in prison design.

A lifetime's accumulation of bric-a-brac and kitsch.

A small town garden is dedicated to a psychic dog with the most soulful eyes.

This 40-foot fowl marks the so-called "wild goose capital of the world."

This massive marble memorial was built bit by bit either out of devotion or spite, but at the expense of the surrounding town.

The man who was president for only one day and spent most of it asleep.

One of America's first planned communities is preserved in a state park.

This art deco masterpiece was once a miracle spring mecca but is now simply a government office building.