A showcase of canine neckwear spanning five centuries of doggie fashion and function.

The UK's oldest theme park slowly slips away.

This natural crater along the coast of Jersey may take its name from the devil statues who have watched over it.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

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.

This historic abandoned train station looks like a stop for ghost trains.

On a site with a long military history, a 1980s shelter.

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

Locals call it the "Give Peas a Chance" bridge because of its distinct graffiti.

Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

The whimsical twist of this spire was either caused by the Devil, an unexpected virgin, or lead.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

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

The curios of pharmacist and collector Henry Wellcome.

A hands-off space for graffiti artists to hone and display their skills.

The town of Argleton has a postal code and appears on maps and even real estate listings, yet it does not exist.

Created as a punny statement about genetic engineering this monstrous hybrid statue has become a beloved icon.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.