Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Two stunning 17th-century libraries and a cabinet of curiosities.

Macabre astrological automaton clock dating to the late 1400s.

A church of bones, decorated with 40,000 human skeletons.

A 141-foot wave of crashing lumber guards the entrance to the Grand Place in Mons.

A visionary precursor to the Internet made of index cards.

Climb inside an iron crystal magnified 165 billion times its normal size.

The Devil’s own choice when he needs a drink in Brussels.

The world's tallest boat lift stands as a massive piece of industrial tourism.

A little sculpture with a large wardrobe.

One of the deepest indoor swimming pools in the world.

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

A wonderfully kitsch bookstore the size of a supermarket.