A reconstructed World War I-era communications array that was once hidden in plain sight.

Not many houses move across borders, this one did it twice.

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

A tribute to smugglers and the Butter Wars.

Relics from as far back as the 16th century are on display in a city known for its playing card industry.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

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

This monumental mural crafted nearly 40 years ago is still in perfect condition.

This triumphal arch celebrating the Sun King's conquest of Lille is a masterpiece of military architecture.

An astounding collection of taxidermy, fossils, skeletons, and even a few strange live beasts.

These crumbling Nazi artillery bunkers are now fair game for massive graffiti projects.

An anti-tank graveyard in the English countryside.

A reportedly haunted 14th-century church is curiously facing the “wrong direction.”

Vast fan-shaped British cemetery honouring American servicemen lost in World War II.

This 12th-century house is one of the oldest continuously inhabited houses in Britain.

A 4,000-year-old burial site hides behind a roadside Burger King.

A 26-foot shark sculpture—a statement about bombs—set off a municipal battle royale.

This unusual geoglyph was built as a warning so low-flying aircraft wouldn't scare the zoo animals.

Model aircraft soar over 360-degree views of the countryside at the start of England's oldest road.

This windmill is believed to be the oldest in the British Isles.

Site of the first hot air balloon flight conducted by the first English balloonist.

Giant, friendly pelicans in Central London, the most unlikely of places.

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

This 19th-century pub features stained-glass windows celebrating Victorian-era "champions."