France's most famous cemetery, with some of its most curious tombs.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

Tombstones and enigmatic inscriptions hide within a vault beneath a popular London arts venue.

A comic book store that puts the marvel back in marvellous.

This museum tucked below a charming cafe gives a brief snapshot of photographic history.

Eclectic final resting place of the controversial explorer.

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

Following the trail of an old metro line, this scenic path is haunted by a creepy spriggan statue.

A historic arboretum and non-conformist, non-denominational park cemetery.

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.

Hidden behind a wall for decades, this masonic lodge was only rediscovered during renovations.

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

Catacombs turned marketplace.

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

An officers prison camp believed to be impregnable by the Germans saw over 30 successful escapes.

The mass grave of the 27 victims of the "Vampire of Hanover."

An ancient pagan site swirling with legends in the foothills of Franconian Switzerland.

This monument to those fallen in the World Wars is accompanied by a U-boat that Germany bought for a Deutsche Mark.

A university observatory dome painted like the beloved "Star Wars" robot.

A steam powered train that runs on city streets.