Embark on a journey to discover the darker side of the City of Light on a tour of the Parisian Catacombs on this guided small-group or semi-private tour (depending on the day selected). A burial ground for millions, the Catacombs' subterranean tunnels are still lined with human skulls and bones. This eerie underground labyrinth of tombs casts the city in a new light.

Although best known for its stunning landmarks like the Eiffel Tower, Notre Dame, and the Louvre, there exists a whole other city underground—an extensive labyrinth that extends nearly 186 miles (300 km). These ancient limestone quarries date back to 2 BC, but became a mass burial site in the 18th century.

Skip past the lines at the entrance and descend deep underground to explore a half-mile (1 km) of these fascinating burial chambers. Your guide gives you insights into the fascinating history behind this gallery of skeletons and the haunting stories that go along with them. After seeing this side of Paris, it’s difficult to look at the city in the same light again.