The famed Catacombs of Paris are a series of underground tunnels that span more than 200 miles beneath the city streets and house the bones of more than six million former city residents (some dating back 1,200 years to the Merovingian era), relocated to the catacombs from overly full Parisian cemeteries starting in 1786. Explorers enter the catacombs through the official entrance, known as the Barrière … Continue reading Paris Catacombs