This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

Giant, friendly pelicans in Central London, the most unlikely of places.

Collection dedicated to brands, packaging and advertising.

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

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

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

This hidden green space is the city's second largest conservatory.

Hear the quietest sound from across the dome.

The longest hedge maze in the world.

An incarceration museum on the spot of possibly the oldest prison in England.

A hands-off space for graffiti artists to hone and display their skills.

Famously misunderstood wonder of the ancient world

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

A student driver's nightmare.

Hidden beneath the streets of London is a secret subway that only carried mail.

Eighty million natural history specimens call this gargantuan museum home.

Stroll through Welsh history in a village of reconstructed structures.

This Roman amphitheater is said to be King Arthur's legendary Round Table.

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

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

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

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

The curios of pharmacist and collector Henry Wellcome.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.