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

Edinburgh's oldest statue hides within a parking lot behind the city's iconic cathedral.

The 20th-century chapel’s intricate woodwork includes amazing details, most notably angels playing bagpipes.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

A six-ton wedding present for the King of the Scots.

This small museum in a 17th-century building honors three iconic Scottish writers.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

The 16th-century church has the only stained glass windows that survived the Scottish Reformation intact.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

Protecting the dead from opportunistic body snatchers.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

A sweet symbol marks the place where torturous executions were once carried out.

The final resting place of soldiers' loyal canine companions.

The fountain marks the area where hundreds of accused witches were burned at the stake.

Hidden beneath the streets of London is a secret subway that only carried mail.

In this truly magical place, rent hasn't been raised since the year 1520.

A floating cat sanctuary on an Amsterdam canal.

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

Cozy basement bar sports an inventory of over 2,000 beers.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

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

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

A fearsome dragon clings to a corner of Munich's city hall.

This Irish museum in a historic 19th century market pays tribute to the glory of butter.