The largest cemetery for enslaved people in Loudoun County was almost lost to history, if not for the research of a minister.

A natural spring situated on the grounds of the Hawthorne estate.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

An abandoned coal mine reached by a steep hike.

A cult archaeology conspiracy theory claims these West Virginia petroglyphs were written by Irish monks in Ogham.

This tiny man looms large over downtown Charleston.

This abandoned bridge to nowhere stands secluded in the woods of a Cleveland suburb.

Faces carved into the cliffs create an otherworldly walking trail.

An abandoned asylum incorporated into a college campus.

The entrance to this sinisterly named tunnel hides behind a Tim Hortons.

An unoccupied lighthouse encased in layers of ice from the waters of Lake Erie.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

This abandoned train tunnel has been the subject of countless ghost stories for years.

Crumbling ruins mark the site of a couple's grisly murder in the woods.

Step into Monet's world at this fine-dining restaurant in the middle of a New Jersey sculpture park.

WWII-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers. .

Extraordinary objects lurk in this quintessential regional museum.

A layered tribute to the work of mosaicist Isaiah Zagar.

The museum calls itself the "National Museum of the Paranormal" and is full of eerie oddities.

A park full of outsider art, created by college students studying outsider art.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.