Macabre astrological automaton clock dating to the late 1400s.

The Swiss hilltop housed an early 20th-century vegetarian nudist colony.

Stumbling upon this whimsical wooded garden is like stepping into an enchanted forest full of philosophical musings.

A massive mausoleum towers over the gravestones in a 19th-century Italian "model village."

A Milanese café entirely designed by the American director Wes Anderson.

The Sighignola summit on the Swiss border offers views so breathtaking it's been named one of the most beautiful places in Italy.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

One of downtown Berlin's last reminders of its Communist past.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

Metro station with a claim to rock n' roll fame.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

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

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

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

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

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

A once-luxurious, now abandoned hotel in the Italian Alps.

Banksy gives themself artistic license with this piece of London street art.

A flourishing garden with pigs, donkeys, goats, rabbits, guinea pigs, chickens, ducks, and sheep.