The world's largest underground iron ore mine.

This obscure walkway links Edinburgh’s Old Town with one of the city's prime vantage points.

At the right time of day, sunlight floods through the roof of this cave and illuminates the small pavilion hidden within.

The best place in the world to buy tinned fish.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

Nestled in the mountains of Portugal is a tiny village made almost entirely of schist.

This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.

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

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

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

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

The final resting place of soldiers' loyal canine companions.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

Protecting the dead from opportunistic body snatchers.

The most loyal of little dogs, or a Victorian era publicity stunt?

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

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

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

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

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

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

The world’s first museum dedicated to the history of childhood opened in Edinburgh in 1955.

This charming old building's loose connection with the Scottish Reformer is what saved it from demolition after it split apart.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.