This South London cemetery holds the remains of more than 15,000 people.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

A naturally mummified 2,000-year-old man.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The anatomical-pathological collection of a man who changed surgery.

A mythically themed self-built sculpture park.

This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.

There has been an astronomical clock on this spot since the 14th century.

The remains of 40,000 humans, meticulously stacked in a tiny churchyard shed.

A miniature city, once ruled by the Queen of the Netherlands.

This 600-year-old home seems to defy physics.

Astonishing rock formations dot the Brimham Moor landscape.

This charming English house was once the home of England's most famous poet.

Oldest Museum of the Netherlands is a true cabinet of curiosities.

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

A 'living museum' in Leiden, the oldest of its kind in the Netherlands.

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

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.

This former Nazi castle was built as a school to train what would have been the future of the Third Reich.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

This temple to the sturm and drang of Richard Wagner contains a dragon's cave and reptile zoo full of living "dragons."

In a small churchyard in Dingolfing, Germany the quaint Schusterkapelle is there to remind you of your imminent mortality.