The largest earthwork effigy in the world.

A castle built by an eccentric medieval enthusiast in rural Ohio.

A ship that lived many lives under many names is now known merely as the "Ghost Ship."

A suspended garden, now gone, once hung in the middle of this abandoned church.

The tragic reality of a town riddled with rumors of haunts, chemical spills, and serial killers.

Symbolic attempt to overcome the issues of life.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

One of the first historical sites of an alternative universe was installed in the town of Paris, Illinois—which is now home to an annual spelling bee of Kcymaerxthaereal words.

The only freestanding table rock formation east of the Mississippi.

Ornate limestone building now filled with geologic specimens, and more.

Small, privately owned island divided between Michigan and Ohio with abandoned vacation homes and a derelict lighthouse.

An otherwise quiet campground becomes a bustling medieval town for two weeks every year.

Abandoned former poorhouse, bible college, and haunted house in an Ohio hamlet.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

This former mining town was named the most toxic town in America.

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

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

A hollow cement depiction of time's inexorable effect on the human body.

A haunting statue called "Eternal Silence" has quite the reputation among visitors with active imaginations.

Hot Doug's "Hot Dog" Stand.

Home to a protest movement, a bombing, and a dramatic change in labor history.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

This mysterious hill seems to pull objects uphill.