The only building in Louisville (hopefully) that contains two ancient holy skeletons.

This abandoned cemetery has a dark past of bodies buried over bodies.

Locals place their offerings on this nightmarish gnarled tree so the witches won't summon another storm.

The grave of the iconic Kentucky Fried Chicken mascot features a bust of the man behind the goatee.

A medical facility that has been kept frozen in time.

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

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.

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

An enormous park-like oasis, full of famous Chicagoans' graves.

A monument to the art of slicing people open.

A Bibliophile's Dream.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

The fountain marks the area where hundreds of accused witches were burned at the stake.

360° views of the city plus five floors of optical illusions and hands-on science.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

This operational mill has survived centuries of destruction and construction.

The eternal resting place of the last highwayman hanged in England.

One of three sites in England that house the National Collection of Arms and Armour.

The photographs of "fairies" that fooled much of the world (including the creator of Sherlock Homes) were taken at this English stream.

The recovered bones of martyrs slaughtered during The Terror are on display in this church crypt.

The remains of 40,000 humans, meticulously stacked in a tiny churchyard shed.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.