Giant granite rocks standing end-to-end like a train of circus elephants.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

A sculpture of a giant man escaping from the depths of the Earth.

A gem in the small Missouri town where Winston Churchill coined the term "Iron Curtain" and effectively began the Cold War.

The maximum security facility was once thought to have "the bloodiest 47 acres in America."

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

This monumental Jesus is often referred to as "Our Milk Carton With Arms."

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

One believer transformed a local curiosity into proof of Vikings on the Great Plains.

Where hills of dirt conceal the burial ground of one of the most powerful ancient Native American societies.

The storied steakhouse is the last in a long line of Lebanese-owned supper clubs in Tulsa.

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

Once in disrepair, the house where the 1983 film was shot has been restored and turned into a museum.

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

Sid Vicious famously punched a hole in the wall of this iconic music venue.

Nature's biggest mammal swims in landlocked Oklahoma.

A tiny but mighty little pumper sits in the middle of the street, waiting for the next big oil strike.

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.