Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

The inverted pyramid design of this station stands out amid Bratislava's urban landscape.

Thousands of slain Soviet soldiers are buried within the shadow of this enormous obelisk.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

The location of a citizen uprising that led to a gruesome act of mob justice.

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

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

A stately palace has been converted into the world's largest cannabis museum.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Dedicated to the Father of the British Fire Service.

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

The dance of this huge clock is a magnificent and eerie commentary on good and evil in the history of humankind.

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

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

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

The final resting place of soldiers' loyal canine companions.

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

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

These steps offer a breathtaking view of one of Europe's most besieged fortresses.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.