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

A fascinating insight into daily life in the Eastern Bloc.

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

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

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

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

Started as a kitchen garden, now the second largest botanical garden in the world.

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

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

An eerie, derelict amusement park in Berlin.

A maze of crosses marks the jumbled divide between the Netherlands and Belgium.

Theme park featuring miniature replicas of European monuments.

Climb inside an iron crystal magnified 165 billion times its normal size.

Lavish royal estate punctuated with heated greenhouses.

A 14th-century fortified keep showcases the masterpieces of an ingenious 20th-century clockmaker.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

A UFO-shaped event building originally intended to be a science museum showcasing the future.

Before the electric telegraph, a chain of stone towers carried messages across France.

Walk through the history of a Dutch truck manufacturer, from 1928 to today.

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

A distinctive former power plant turned university lecture hall looks like it could make you breakfast.