The birthplace of Karl Marx is now a museum dedicated to the communist revolutionary's life and work.

The last bastion of Roman presence north of the Alps looms over a German town.

A collection of 4,000 thimbles that's more versatile than one might imagine.

Horrifically creative torture devices and shame punishments line the walls of this chilling museum.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

These fantastically named natural pools look like something out of a Scottish myth.

This small museum nestled inside a souvenir shop is dedicated to Sweden's most well-known toy.

Outside a Viking museum sits a modern-day runestone made by a Swedish runemaster using traditional methods.

Stockholm's tiniest statue is of a small boy looking at the Moon.

Stockholm's narrowest alley is barely over two feet wide.

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.

It houses the remains of a 17th-century version of the Titanic.

Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.

This memorial to World War II's fallen airmen shows us the movements of the stars that once guided them.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.