The nerve center of a massive, state-of-the art radio telescope that sprawls across Western Europe.

Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.

Dedicated to the American general whose reply to a German demand for surrender was simply "Nuts!"

This imposing tower named after the mythical sword of King Arthur is considered the tallest freestanding climbing wall in the world.

This old, abandoned hotel offers magnificent views.

A Cold War command center is hidden under an idyllic countryside.

Stocking up on the world's best beer requires a pilgrimage to a monastery drive-through.

A radio telescope for listening to the stars, based in one of the cloudiest countries in the world.

This giant radio telescope would be a rusting ruin if it hadn't become such a beloved relic.

A moving memorial to the fallen and missing from WWI trenches.

This memorial museum chronicles the apocalyptic destruction of the First World War.

Hop aboard a charming bog train to explore this rare open-air museum of peat.

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

In the shadow of a former battleground, the resting place for nearly 2,000 soldiers who died in World War I.

An early 20th-century sanatorium, long abandoned and now being reclaimed by nature.

This mine is home to the largest man-made hole in Europe.

This Belgian theme park began as a refuge for bored church children and was closed down when a boy lost an arm.

The world's tallest boat lift stands as a massive piece of industrial tourism.

The tallest mountain in mainland Netherlands isn't actually very tall.

This abandoned Belgian fortress is purposefully being left to nature.

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

An amusement park on the grounds of an unused nuclear power plant, with a swing ride inside the cooling tower.

Go inside a revolutionary, cage-less zoo where 35 species live and some of them roam free alongside their human visitors.

A beer pipeline runs beneath Bruges.