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

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

The largest cave chamber in Britain—big enough to fit a whole cathedral inside.

A 6th-century stone lies at the site of the mythical battle waged between King Arthur and his nemesis Mordred.

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

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

An Oxford museum where visitors can have tea with the Mad Hatter and climb through the wardrobe to a fantasy land.

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

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

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

This tangled English forest looks like something right out of a fairytale.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

A fantastic castle rumored to be the birthplace of King Arthur.

Surreal riveted sea forts once protected the Kent shores from German attack.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

The longest hedge maze in the world.

Famously misunderstood wonder of the ancient world

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

A small literary museum remembers the life and works of the author of The Thirty-Nine Steps.

Accessible only at low tide, the deserted island is dotted with World War II ruins.

The 16th-century church has the only stained glass windows that survived the Scottish Reformation intact.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

The world's shortest street was created by an awkwardly placed hotel.