The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Famously misunderstood wonder of the ancient world

Hidden beneath the streets of London is a secret subway that only carried mail.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

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

This bridge is the first to be made entirely from iron, but designed like it was still made of wood.

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

Follow the original medieval paths that wind through this intriguing section of the city.

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

A long, winding trek rewards you with a gorge so captivating it inspired a painting in the Tate.

Harry Potter once visited this massive limestone cliff, which was carved by an ancient glacial river.

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

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

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

One of the oldest trees in Britain may have been witness to some of the country's formative moments.

The anatomical-pathological collection of a man who changed surgery.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

Hauled from the water's depths, Henry VIII's flagship is preserved in this capsule-shaped museum.

This colossal war machine is now a living museum dedicated to underwater warfare.

The handiwork of a underdog clockmaker who solved an impossible problem for an Empire, and forever revolutionized seafaring.

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

A building that survived WWII, possibly on the virtue of its name alone.