High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

France's most famous cemetery, with some of its most curious tombs.

A surrealist timepiece by the artist of melting clocks.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Indents in the pavement are all that remain from a grisly death machine in Paris.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

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

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

Beggars were miraculously "cured" of their fake ailments when they returned home to this 17th century Paris slum each night.

The oldest stone house in Paris was built by its most famous alchemist.

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

Notorious artist squat renovated into legal studios.

A mechanized clock where a man fights off a dragon, crab, and rooster.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

This museum houses an imposing skeleton army comprised of creatures great and small.

A haunting collection of the vanished and disappearing natural world.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Dedicated to the art of hunting, with juxtapositions of contemporary art.

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

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.