This overlooked street light once served as a KGB dead letter box.

This beautiful example of Victorian engineering is the oldest water-balanced funicular anywhere in the world.

The biggest and deepest Cold War bunker open to the public can be found in southeast England.

On this wooded path, a stained-glass window creates a spellbinding forest cathedral.

The curious and tiny collection contains some very odd objects.

This silent sentry in the crypt below a large Gothic cathedral is often knee-deep in water.

A Scottish manor with a history of mysterious fires, magic, and eccentric tales

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

Near Birmingham, England three and a half miles of top-secret tunnels housed a World War II “shadow factory” and a Cold War nuclear bunker.

Grab a cuppa at England's first and only domestic tea plantation.

A petite castle folly in the English countryside.

Eyam took steps to quarantine themselves and keep the plague from spreading.

This modern labyrinth lies in the shadow of a ruined medieval castle.

This antique prison is a tourist attraction with a sordid past.

Colin Stokes "got a bit carried away" and built a castle that looks like something out of Tolkien.

Protecting the dead from opportunistic body snatchers.

Human-made caves excavated to hide a secret society of wealthy pagans.

Britain's only herd of free-ranging reindeer.

The ghosts of Britain's telecommunication past sit rusting away in a small village in England.

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

This elaborate Byzantine-style building was designed for a not-so-pretty purpose.

The remains of the great moral philosopher reside in a university in London.

A century-old tradition has culminated in a small but singular collection of feline effigies.

Installed at a chaotic intersection, this gave London traffic cops a place to hang their heavy woolen coats.