A famous burial ground with a history both grim and literary.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

During an annual Catholic feast in this tiny Spanish village, men dressed as devils leap over rows of babies to cleanse them of sin.

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

A haunting collection of the vanished and disappearing natural world.

A museum of carnival attractions where you are invited to ride the rides.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

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

The vast, legendary catacombs hold secrets much stranger than stacked bones.

These ancient artifacts are a testament to the enduring significance of the bull in Spanish culture.

This enigmatic artifact is a rare depiction of an ancient Iberian noblewoman.

An iconic and controversial ancient Iberian funerary urn with a hauntingly penetrating gaze.

Stuck in the middle of a modern Madrid city block are the remains of a 19th century sports complex.

The personal library of the founder of modern neurology is open to visitors.

The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.

A grotto-like lodge decorated with gilded mosaics, rocks and a noisy waterfall was the setting for the most sumptuous pleasure house of 1900s Europe.

The decaying ruins of Wales' first asylum for the mentally ill.

This neolithic stone grave has been altered and restored so often its now more neo than lithic.

The unexpectedly beloved remnants of a controversial thermal power plant.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

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