His "Lionheart" is entombed separately from the rest of his body.

This stunning French estate was so lavish that it landed its original owner in jail for the rest of his life.

The room where Vincent van Gogh died.

Perfume museum and library.

Experience architect Le Corbusier's modernist design for living in the home he designed for himself.

Former hunting lodge of a duke who was an avid collector of impressionist works.

This hidden workshop is filled with molds of France's most iconic sculptures.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

One of the oldest masonic museums in Paris.

The industrial architecture honors the laborers who brought the Exposition Universelle of 1900 to life.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

The floorboard scrawling of a tragic madman is on public display outside a Paris hospital, much to the dismay of its opponents.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

The tomb of history's greatest potato promoter is surrounded by tubers.

This museum in a Paris apartment gives a unique look at the iconic French singer's life.

This off-limits room in the National Library of France is home to a system of pneumatic tubes, once used to bring books to readers.

This massive library holds what was once the largest book collection in the world.

A unrivaled and rather horrifying collection of wax dermatological models.

The approximate spot where the last Grand Master of the Knights Templar was put to death.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

A mud statue stands in the dark tunnels, seeming to hold up the weight of the city above.

Statue of death tucked in the University of Medicine courtyard.