A wonderfully kitsch bookstore the size of a supermarket.

Nature is slowly overtaking this disused cemetery on the outskirts of Brussels.

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

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

An underground city of ancient quarry tunnels hid thousands of Allied soldiers in WWI.

This is what trains will look like after the zombie apocalypse.

The 16th-century church was kept in its ruined state as a reminder of the casualties of World War I.

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

This old, abandoned hotel offers magnificent views.

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

This "social palace" housing complex created a relatively stable and self-contained worker's society... for a time.

A dramatic art installation features a BMW flying out of a building in Rotterdam.

A modern reimagining of a medieval city gate.

The tallest waterfall in the Netherlands is a lovely, stepped feature that is only 50 feet tall.

The monumental home of Prussia’s eccentric "Cannon King."

An early 19th-century English style garden hidden in the Rotterdam cityscape.

This gigantic monument hidden in the woods was built to thank the Dutch for sheltering Belgian refugees during World War I.

An art installation memorializing a tram stop, which became a tram stop.

A giant yellow phallus sculpture hidden in the gardens of the Museum Boijmans Van Beuningen.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

This hotel was once home to a steamliner company and became the final rest stop for Europeans heading to the New World.

The giant scales in this museum can still tell if someone is one of the devil's brides just by weight.

A late-medieval Dutch castle with trick fountains in its whimsical water gardens.

Twisted buildings adorn the banks of the Rhine river.