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

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

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

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

Fascinating town where normal life interfaces with the occult.

This pub was 238 years old when it decided to revamp its image: It started serving Thai food.

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

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

A naturally mummified 2,000-year-old man.

A clock designed to run with perfect accuracy for 10,000 years.

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

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

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

Scattered throughout London are ancient remnants of the city's former bounding wall.

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

After nearly 60 years, there's still a bear at Paddington Station looking for help.

London's smallest police station is barely the size of a phone booth.

Hear the quietest sound from across the dome.

A little slice of Japan and its aesthetics in London's Holland Park.

Famously misunderstood wonder of the ancient world