A 200-year-old prison that now houses a peculiar crime museum.

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

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.

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.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

Museum about life, death, and cannibalism in the Stone Age.

The elaborate clockwork contraptions in this Scottish gallery create small worlds of whimsy and horror.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

A modern English garden of eccentric beasts, follies, and oddities.

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

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

The largest greenhouse in the world is home to over one million types of plants.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

A unique waterfall that some believe attracts the fairfolk.

400-year-old garden, restored to beauty.

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

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

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

Eighty million natural history specimens call this gargantuan museum home.

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

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