This feat of Brutalist architecture is also known as the Three Sisters.

A pair of connected skyscrapers form this symbolic gateway.

Famously misunderstood wonder of the ancient world

The largest stone circle in the world has ended up bringing up more questions than it has answered.

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

Britain’s highest medieval monastery is a remote ruin nestled at the head of a valley 1,240 feet above the sea.

Beasts and branches swirl in sandstone carvings, interrupted by one strange creature.

Detailed sandstone carvings show an array of symbolism and adorable animals.

The museum houses one of the world's largest shoe collections, boasting over 12,000 pairs.

The alleged birthplace of Lady Jane Grey, who was executed at age 16 for claiming the throne of England.

A gorge full of caverns where early humans lived alongside cave hyenas, giant mammoths and wooly rhinoceroses.

This ruined medieval castle was the scene of Lord Robert Dudley’s seductive reception for Queen Elizabeth I.

One part local history, 99 parts gruesome haunted house.

A kaleidoscopic warehouse-maze of handmade neon signs.

Under a church hides a forgotten 13th-century ossuary containing the remains of around 2,500 people.

An intriguing three-sided folly is a testament to one man's devotion to Catholicism and the number three.

The intended purpose of this unfinished Elizabethan building remains a mystery.