Millions of people travel to Paris every year. It has some of the most recognizable landmarks and tourist attractions in the world. However, few of them make the time to visit the city of light’s dark corners: the catacombs. Housing some of the largest ossuaries in the world, if you ever find yourself in Paris, make sure to visit the City of the Dead resting right beneath your feet.
A rather unassuming entrance…Source: Wikipedia
So what is it? An ossuary is a site used as a final resting place for skeletal remains. Sometimes these can be just a box or a room or, as is the case with Paris, an entire underground lair. Down in the catacombs, you will find the skulls and other bones from over six million people.
Just three random skulls. About six million more where they came from. Source: Blogspot