This sprawling Belgian fort was once thought of as impenetrable but now it is simply an abandoned relic.

This bike path was sunk below water level for maximum wonder.

The site where one of the most famous poems of World War I was composed is preserved to honor the legacy of the work.

A Museum of Psychiatry in a still-operating mental institution.

A little sculpture with a large wardrobe.

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

A rare example of World War I trenches from the British front.

Theme park featuring miniature replicas of European monuments.

This ghost town in Belgium will lose its street art when it ceases to exist.

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

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

Lavish royal estate punctuated with heated greenhouses.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.