A rather grand, but tiny, folly on the banks of the River Wear associated with a Polish count.

This library dates back to the late 17th century and was one of the first public lending libraries in England.

Locals affectionately dubbed this World War I memorial "Tommy."

For decades, a bottle factory dumped their waste into these waters—now it's considered the best sea glass beach in England.

The nearly 200-year-old folly has a secret spiral staircase hidden in one of its pillars.

A million and a half tons of earth were used to create one of the world's largest land sculptures.

Home to the longest wooden escalators in the world.

The largest timber structure in Europe.

A famous pilgrimage site that remains hidden in the midst of a city.

The remains of a Dominican friary, once one of the largest of its kind in the United Kingdom.

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

At 1,732 feet above sea level, this spectacularly isolated yet surprisingly bustling bar is the highest pub in Britain.

Possibly the oldest living thing in Europe, more likely a pagan survivor.

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

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

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

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.

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

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

A church that bred legends, and served as an inspiration for the Da Vinci Code.

Eighty million natural history specimens call this gargantuan museum home.

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

Catacombs turned marketplace.

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