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

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

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

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

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

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

A little sculpture with a large wardrobe.

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

A bronze statue of the fictional character nicknamed "Mrs. Hat" from a beloved Belgian comedy.

This statue includes small details that highlight a city of "firsts."

An English cenotaph honoring an American feminist icon.

Makers and sellers of the original and finest York Ghosts.

Fortified medieval tower house with lovely roof garden.

The naturally mummified body of a peasant girl saint.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

A local student's chance encounter with Keith Haring led to the creation of one of Europe's largest murals.

Manchester salvaged this sculpture of the adopted Mancunian when it was no longer wanted in Ukraine.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

An architectural oddity hides in plain sight on this iconic London bridge.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

The Great Fire of London and the regulation of one-way streets both started in this alley.