Paris Catacombs

Catacombs of Paris hold the remains of more than six million people. They were originally set up in the 1700s because of overcrowding of a central cemetery becoming a hazard, so they used abandoned quarry tunnels snaking through the city. The tunnels were used to store the cemetery remains dating back to the 15th century. Though some 200 miles of labyrinthine tunnels are believed to exist, only a small section of it is open to the public. People have ventured deep into them and would go missing for days. In 2004 while searching the Catacombs police discovered a cinema in one of the caverns. It was equipped with a giant screen, seats for the audience, a fully stocked bar, and a complete restaurant. The source of its electrical power and the identity of those responsible remain unknown.