This small corner bar is home to a rare 1930s dance organ that still plays tunes for one Euro.

This memorial museum chronicles the apocalyptic destruction of the First World War.

Petting this mysterious iron monkey supposedly brings good luck.

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.

A moving memorial to the fallen and missing from WWI trenches.

To enter this cluttered-yet-cozy sanctum of Belgian brews, ring the bell and tell the gatekeepers you've come “to taste beer.”

Burbling away in refrigerators are 105 sourdough starters from around the world.

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

The former home of a trailblazing surrealist is still filled with haunting dolls and grim paintings.

Drink among marionettes at this pub inside a historic puppet theater.

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

A huge old mansion full of thousands of toys, each there to be used and played with.

A beer pipeline runs beneath Bruges.

Explore 400,000 years of humans' "battle against darkness" in this offbeat but thorough lamp museum.

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

Dummies recreate radiological discoveries from history.

Most prolific publishing house in the 1600s open to the public.

This bike path traverses the treetops.

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

A visionary precursor to the Internet made of index cards.

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

Housing the groundbreaking maps and globes of Gerard Mercator.

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

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