Stroll through retro Paris while shopping for old postcards and discarded doll heads.

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

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

Huge concrete structures designed as an early warning system for Britain to detect enemy aircraft.

Surreal riveted sea forts once protected the Kent shores from German attack.

Man-made cave with enigmatic carvings, some say made by the Knights Templar themselves.

Fantastically decorated underground chambers built in the 1760s.

Amazing collection of folly buildings in Cobham, Surrey.

England's oldest surviving hedge maze has been confusing visitors for over 300 years.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Home of one of history's most famous cartoonists just as he left it.

English antique dealers with a taste for the unusual.

London's largest outsider art museum.

London's old-school healing garden.

A historic house left in "dramatic still life."

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

A quiet memorial to those who died saving others in the heart of the City of London.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

Hear the quietest sound from across the dome.

A mysterious artist-run cabinet of curiosities and library.

The largest of London's subterranean rivers and once a mad, bad center of London life.

A cluttered and astounding collection of antiquities and curiosities.