A once-magnificent collegiate church is falling into ruin.

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

This whimsical statue dumps water on its head to symbolize knowledge flowing into his brain. Or maybe booze.

A wonderfully kitsch bookstore the size of a supermarket.

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

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

The "stairway to heaven" lookout tower was built to resist weather, arson, and the laws of physics.

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

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

Descend into the tunnels to experience the life of a coal miner.

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

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

An open-air sewer system that was covered piece-by-piece over 300 years.

This modern arts center is built around a gem of late-Baroque architecture.

Artwork tucked within the trees greets visitors with surreal sonic experiences.

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

Christ's blood preserved in a Belgian town.

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

A little sculpture with a large wardrobe.

Meet the bronze beloved pet to a family of famous peeing statues.

Ancient man-made caves underneath small town Belgium.

Sculpture designed by Turkish artist and professor Mehmet Ali Uysal.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

This abandoned Belgian fortress is purposefully being left to nature.