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

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

An icy lake tucked among jaw-dropping alpine panoramas.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

A haunting collection of the vanished and disappearing natural world.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

Space program, pneumatics and more, bits and pieces, for movie sets or the common man.

A macabre tour of Hollywood’s deadly history.

Where the line between entertainment and aerospace blurs.

"Looks so real, it's scary!"

A book bound in the skin of an infamous criminal, along with countless other specimens.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

The fountain marks the area where hundreds of accused witches were burned at the stake.

A huge enchanting public park just outside the ancient walls of Rome.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

A fairy tale castle in modern Rome.

The underground sanctuary of a mysterious ancient cult.

Architectureal fantasy quarter of Rome.

This maze-like slot canyon is a unique gem within an already fascinating geological area.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

This skeletal, unfinished Gothic church once housed a miraculous masterpiece by Raphael.

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.