Scattered throughout London are ancient remnants of the city's former bounding wall.

Catacombs turned marketplace.

Eighty million natural history specimens call this gargantuan museum home.

One part local history, 99 parts gruesome haunted house.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The celebrated eyesore created by starry-eyed sweethearts.

The video game-themed street art first popped up in the French city.

The final resting place of the "father of special effects."

An immersive projection art installation uses sound, scale, and light to take visitors inside classic works of art.

135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.

How did a French journalist’s grave become the sexiest statue in the cemetery?

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

19th century pendulum and a clock restored by a rogue group of guerilla artists.

France's national museum of scientific and industrial instruments.

Paris' linguistic guide to the international language of, yes, love.

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

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

Notorious artist squat renovated into legal studios.

Visitors can explore the role of mysticism throughout the ages inside this interactive museum of magic.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The most visited, and possibly most controversial, museum in Germany.