This small condiment museum makes all manner of mustards with a 200-year-old mill.

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

Abandoned since 1998, this train station has become an oasis for urban explorers.

An early 20th-century sanatorium, long abandoned and now being reclaimed by nature.

This small window display is dedicated to the noble carrot.

Inside this former medieval prison is a collection of objects designed to inflict unbelievable pain and suffering on the human body and mind.

Head underground and take a tour of the city's working sewer system, and see the underground river Senne, which defined Brussels for centuries before being covered in the 19th century.

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

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

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

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.

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

This recently restored crypt was once plagued by liquefying coffins and exploding caskets.

This abandoned Belgian fortress is purposefully being left to nature.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

This ghost town in Belgium will lose its street art when it ceases to exist.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.