The largest crypt ever constructed in France was built in the 11th century on an ancient Druid sacred site.

This bridge was constructed from the rubble of the infamous Bastille.

A mosaic-tiled house built by graveyard sweeper Raymond Isidore.

Historic medieval fortified city in southwest France.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

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

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

France's national museum of scientific and industrial instruments.

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.

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

A popular day's outing in Bovington consists of watching military tank driving practice.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

What was once England's second-richest abbey is now a haunting ruin.

This hilarious English intersection is an automotive whirlpool.

The metal frame is all that's left of a wicker sculpture which once towered over the M5 motorway.

This ruined medieval castle was the scene of Lord Robert Dudley’s seductive reception for Queen Elizabeth I.

A rotting air force base is now home to rare birds and scarce plants.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

A monument to the thrice mayor of London who according to lore made his fortune by selling his rat-chasing cat.

A miniature village mimics the surrounding buildings so well it includes itself.

What happened to the three lighthouse keepers who vanished from this place remains a mystery over a century later.

The highest peak in all of England is plagued by dangerously fickle climate shifts.

This ancient bridge made of stone slabs is said to be reserved for the devil to sunbathe.