A strange rock formation with numerous legends trying to explain it.

According to a satirical conspiracy theory that persists today, this German city of 300,000 is a hoax invented by the CIA.

The world's oldest rose is so tough it survived being bombed in World War II.

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

These delicate sand pyramids look like naturally occurring gothic spires.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

Pilgrimage site for star-crossed lovers.

This winding road through an Italian canyon may be the most scenic drive in the world.

A whimsical bridge adorned with decorative dragons.

An industrial relic is now one of Europe's most staggering art spaces.

A nomadic museum known for its art exhibitions about religion and faith.

Colorful and chaotic stacked hotel in North Holland.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

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

Striking occult iconography on a medieval German church.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

The world's largest boar is a huge steel titan found at a French rest stop.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

A former palace transformed into a mausoleum for North Korea's supreme leaders.

A vast museum devoted to North Korea's victories against its imperialist enemies.

North Korea's massive "hotel of doom."