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

The historic Masonic Lodge in which the first-ever female Mason was initiated.

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

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

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

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

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

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

Copenhagen's celebrated theme park and gardens.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Commonly acknowledged as the only public monument to the Devil himself.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

The world's most active stratovolcano is almost always erupting.

Italian cave with exceptional acoustics and an unsavory history.

Pilgrimage site for star-crossed lovers.

A fake medieval village in the middle of Turin.

When this funny little building went up in the 19th century, most people thought it would simply fall over.

An exclusive waiting room built for the royal family in the 1920s is hidden in Milan’s central station.

A medieval fresco which reminds visitors that death will come for us all.

A space dedicated to contemporary art and culture, co-chaired by fashion icon Miuccia Prada.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

The mark of the Devil's horns on a marble column in Milan.