Terrifying derelict military hospital once housed a recuperating Hitler.

This historic stone bridge has an entire neighborhood clinging to its sides.

Skeletons dressed in extravagant 18th century royal costumes cavort in the aisles of this German basilica.

Started as a kitchen garden, now the second largest botanical garden in the world.

Nicolas Schöffer's massive interactive sculpture was assembled in 1961 and brought back online in 2016.

Belgium’s famous peeing statue has worn many hats (and coats, and pants), which are on display at this small museum.

Walk or bike along a narrow strip of Belgium sandwiched by German territory.

A visionary precursor to the Internet made of index cards.

Housing the groundbreaking maps and globes of Gerard Mercator.

The patron of this extravagant Art Nouveau confection insisted that nothing less than a boat should project from its facade.

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

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

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