Go inside to really appreciate this 500-year-old technological masterpiece.

According to local legends, a monstrous worm once wrapped itself around this hill by the River Wear.

A bronze statue of the fictional character nicknamed "Mrs. Hat" from a beloved Belgian comedy.

A museum dedicated to secret surveillance.

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.

Drink among marionettes at this pub inside a historic puppet theater.

Brussels' favorite peeing boy has a sister.

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

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

The Devil’s own choice when he needs a drink in Brussels.

The remains of a Dominican friary, once one of the largest of its kind in the United Kingdom.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

An unusual stone chair can be found on the banks of the River Wear, not far from Durham Cathedral.

A monument with a strange legend involving a horse's tongue.

The lantern carried by the infamous Guy Fawkes when he was arrested while attempting to blow the houses of Parliament and the King of England to smithereens

Hundreds of years ago, this lion-shaped door knocker could help a person accused of a crime find temporary safe haven in Durham Cathedral.

A famous pilgrimage site that remains hidden in the midst of a city.

A million and a half tons of earth were used to create one of the world's largest land sculptures.

The largest timber structure in Europe.

The 2,000-year-old pieces of metal are an ancient soldier's military discharge papers.

These lamps were created to expel sewer gases after an event known as The Great Stink.

The largest Roman amphitheater in the Balkans once held over 20,000 people, but managed to lay hidden for hundreds of years.