After descending the long (19 m) dark, narrow spiral staircase into the Paris underground,
the mood was set for a chilling but interesting look into existing remains of Paris history.
This ossuary is one of the largest in the world, holding the bones of an estimated six million deceased.
These skulls and bones are meticulously stacked and sometimes arranged in intricate designs.
The underground tunnels twist and turn creating an unnerving maze under the bustling streets of modern-day Paris.