The Paris Catacombs, or Catacombes de Paris, is a unique and fascinating underground attraction that lies beneath the City of Light. Stretching over 150 kilometers, this extensive network of tunnels and chambers was created in the late 18th century to alleviate overcrowding in Paris' cemeteries. Today, visitors can explore a section of these ancient passageways, which are lined with the remains of millions of Parisians who were reburied here during the 19th century. As you wander through the dimly lit tunnels, you'll discover ornate stone carvings and intricate frescoes, as well as the skeletal remains of those laid to rest here. A somber yet captivating experience awaits in these subterranean chambers, offering a glimpse into Paris' rich history and mortality.