Two monstrous faces loom over a village in Czechia.

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

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

A crucified and bearded female saint.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

Behind a modern brick exterior lies the oldest continuously-operating lunch-car diner in the United States.

The preserved remains of the former Milwaukee County Hospital for the Insane are hidden in the wooded grounds of County Park.