Building Men of War and Indiamen from Holland's Golden Age.

Its town washed away centuries ago, this lonely tower by the sea tells the tale of a mermaid and a curse.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

Hidden within a Netherlands crater is a stone bed that lets those who lie in it see the sky as a curved surface.

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.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.

This historic stone bridge has an entire neighborhood clinging to its sides.

A striking 12th-century-style castle built on the edge of a cliff.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

"The most colorful grottoes of the world.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

The music is over at the Ballhaus Riviera Ballroom, but the ballroom remains in haunting disrepair.

Terrifying derelict military hospital once housed a recuperating Hitler.

Living trees form the structure of an open-air palace.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

A small but immensely extravagant palace built by the "Night King."

Skeletons dressed in extravagant 18th century royal costumes cavort in the aisles of this German basilica.

A slice of central Asia in the middle of Berlin.

Ruins of a German Castle on top of a towering stone pillar.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

An eerie, derelict amusement park in Berlin.

The fairy tale castle of the "fairy-tale king."