Abandoned railway line circling the city of Paris.

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

You can climb to the summit of Black Mountain, as long as you sign the waiver.

An enormous natural sandstone bridge in Kentucky.

Outstanding collection of 19th century medical instruments includes a life-size figure cast from as many as 200 cadavers.

An abandoned theme park with a strange and tumultuous past.

A museum and doll store featuring a surreal and super sanitized version of where babies come from.

They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.

The ruins of a cotton mill that was burned in the Civil War are still hidden in a Georgia forest.

This intricate Hindu temple is the largest of its kind outside of India itself and was constructed like a giant puzzle.

Healing Springs that once ran red with soldiers' blood.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

Secret gardens just a few miles from downtown Atlanta.

This small cemetery is all that remains of Atlanta's first Black communities.