Hamburgers are intensely proud of their tunnel beneath the river.

Thrilling and delicious complement to any dining experience.

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

The commemorative stone column conceals a secret laboratory.

This ancient Egyptian obelisk still bears the wounds of World War I.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

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

The signs of a long buried road can still be found hidden beneath a London sewer grate.

On a wall in linear London, a plaque hangs at the high water mark of one of the worst floods in fictional Kcymaerxthaereal times.

At just 51 feet and 10 inches long, it's the shortest street in England.

This memorial to World War II's fallen airmen shows us the movements of the stars that once guided them.

Follow the original medieval paths that wind through this intriguing section of the city.

One of the shortest streets in York has an especially odd name.

An incredibly well-preserved piece of ninth-century Viking poop.

A 600-year-old mini shrine guarded by a sword-wielding knight hides in a crumbling cliff face.

Where Agatha Christie mysteriously disappeared in 1926.

A cross marks the spot in a small Scottish village that claims to be the exact center of the country.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

A sweet symbol marks the place where torturous executions were once carried out.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

The fountain marks the area where hundreds of accused witches were burned at the stake.

360° views of the city plus five floors of optical illusions and hands-on science.