A bronze bust commemorates the heroism of the secret agents who led covert operations against the Nazis.

A brick foundation and piles of listing building materials are all that remains of this World War II POW camp.

Museum celebrating the history of computers, especially their role in codebreaking.

Visit the WWII bunker where the British won the battle for the skies.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

It is still illegal to "quarrel" at this unlikely urban oasis built on top of an electrical substation.

A nuclear bunker built to shelter the politicians and important people of Scotland in case of nuclear attack.

This 15th century pub is one of only two pubs in England situated on consecrated ground.

This giant wooden treehouse within a sprawling garden has its own eatery.

The smallest pub in Britain was once a cabinet of curiosities and it still has the dead cat to prove it.

This charming railway is one of the oldest and steepest funiculars in England.

The taxidermied remains of a once-great parrot.

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

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

A petite castle folly in the English countryside.

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

This century-old grotesque has a mysterious history and may not actually be a rabbit.

A beautiful ruin of a 14th-century Plantagenet castle built by a medieval mercenary.

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

Nestled amid the peaks and lochs of the Scottish Highlands, this inn and pub has played host to outlaws and ghosts.

This magical museum celebrates the life and work of a seminal children's book writer (and occasional spy).

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

A friendly pub with a sordid past in cock fighting.

A statue in the heart of Edinburgh honors a bear that served in the Polish military during World War II.