A ruined castle revived by a glove magnate, home to countless tales of bad luck, romance, and war.

A mineral spring that became all the rage in 17th-century England.

An unusual artwork dedicated to a unique man that entertained people visiting Cambridge while raising money for charity.

One of several Lilliputian portals that are ready to transport passengers to other dimensions, if they can find them.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

A complicated contraption for telling time by the moon.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

Named after a lodging site that existed nearby, a bridge has existed at this location since 1455.

This hill is all that remains of Cambridge’s former castle.

The graveyard with the highest IQ in Britain.

The history of West London’s water supply.

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.

This small, ingenious cannon once helped regulate Parisian life.

What looks like a normal building is really a hollow facade hiding a subway vent.

A lone cannonball remains lodged in the walls of the Hotel de Sens as a sober reminder of a revolution.

An all-American grocery store in Paris sells U.S. "cuisine" like Pop-Tarts and Heinz ketchup to homesick ex-pats.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

A curious collection of locks and keys.

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

This banal Parisian entranceway is not what it seems.

This stone angel is one of the biggest caryatids in all of Paris.

Marvel at the opulent Art Nouveau interior while dining on dirt-cheap French classics.

For more than a century, revolutionary graffiti has marked the wall of a Parisian church.

A museum dedicated to one of Paris’s most famous residents, tucked into a corner of one of the city’s most famous squares.