Bridge that died in war and was resurected.

Yugoslavia's biggest underground airport lies in ruins.

You would never come across this tiny green oasis if you didn't know it existed.

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

The vast chamber inside this abandoned cooling tower looks like something out of a sci-fi dystopia.

Ancient man-made caves underneath small town Belgium.

The foundations of a forgotten fortress, wedged in between two streams.

A taxus-tree to which Julius Caesar reputedly tied his horse.

A pilgrimage site where people ask Saint Dymphna to watch over those who are not of sound mind.

The Belgian royal family's private depot now stands abandoned and forgotten alongside the tracks.

This gruesome biblical parade celebrates the one day a year that a bit of Jesus' blood turns to liquid.

This Belgian palace was long the domain of priests and aristocrats but is now being turned into an art commune.

Each time a baby is born in Ghent, these streetlights flash in silent celebration.

The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.

This collection of solar timekeepers includes the world's first digital sundial.

Dummies recreate radiological discoveries from history.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

A once-magnificent collegiate church is falling into ruin.

The Belgian library displays burned books that were salvaged from the fires of both world wars.

This impressive collection of skulls and bones was gathered by an ex-zookeeper who took advantage of a pig plague.

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

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

Housing the groundbreaking maps and globes of Gerard Mercator.

Only museum in the world devoted to bookbinding and book arts holds a permanent collection representing five centuries.