This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

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 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.

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

This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.

Hidden in plain sight on a gable between two towers on the roof of shipping firm F. Laeisz' headquarter in Hamburg sits an unexpected bronze sculpture.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

Model Trains and Much More in Hamburg.

The largest airborne operation in history was launched to capture this bridge.

A set of beech hedges planted in the 19th century forms a tunnel that takes on a different appearance in every season.

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

This Greek temple, open only an hour a day, was the site of a war of tastes between an architect and an artist.

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

Visitors to this Belgium graveyard are greeted by the grieving stone parents of the young men lost to war.

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

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

In an area where the remnants of WWI are discovered on a regular basis this preserved frontline trench may be the most amazing.

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 Cold War command center is hidden under an idyllic countryside.

This old, abandoned hotel offers magnificent views.

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

An undulating wicker beast looms peacefully atop a sand dune in Belgium.