A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

Protecting the dead from opportunistic body snatchers.

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.

Possibly the world's smallest museum is home to one exhibit that sheds light on the capital city's dark criminal history.

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

Legend says a witch conjured the world's third largest whirlpool to protect Scotland from a nasty pirate.

This collection of Neolithic monuments make up one of The U.K.'s richest archeological landscapes.

The "Bridge Over the Atlantic" lets you cross the waterway in mere seconds.

Every September, international competitors flock to the flooded quarries of a tiny Scottish island.

This small Roman arch was transformed into a dwelling by the founder of the Trinitarian Order.

2300-year-old Roman road connecting the empire.

The yawning maw of this pagan visage is said to bite off the hands of liars.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

This historic Art Nouveau townhouse was the former home of the son of a famous chemical inventor and industrialist.

The bones of the Biblical Magi traveled to Constantinople and Milan before landing in their current home inside an elaborate golden reliquary in the Cologne Cathedral.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

This snug medieval lane is one of the narrowest streets in the world.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

This sculpture used famed boxer Joe Louis as the inspiration behind its body.

This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

Romania's triumphal arch looks out over Bucharest.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.