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

Shiny Brutalist box commemorates a pioneer of electricity and houses a railway transformer.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

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

Catacombs turned marketplace.

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

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

A historic house left in "dramatic still life."

Art Deco and “Wrenaissance” mash-up, this recently restored royal residence has been home to kings and comes with secret monkey passages included.

The remains of Crystal Palace Great Exhibition of 1851.

A Victorian park cemetery, standing on the site of what was once the Great North Wood.

The Egyptian-inspired last resting place of Lord Kilmorey.

In Twickenham sits a small whitewashed castle that inspired Mary Shelley's 'Frankenstein.'

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

Amazing collection of folly buildings in Cobham, Surrey.

An avant-garde artist is survived by his seaside garden.

One of England's most famous churches hides a pair of little known architectural treasures.

An English explorer's vast natural history collection has the first realistic dioramas of animals staged in their natural habitats.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

A stunning cemetery famous for its extraordinarily delicate & lifelike mourning sculptures.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

A mining town once rife with murderous disputes over its copious treasures now creates income as a popular spot for photo shoots.