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

A collection dedicated to the treatment of disease, held in London's oldest hospital.

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 collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

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

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

Hear the quietest sound from across the dome.

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

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

An unusual round church in London with a Templar past.

A cluttered and astounding collection of antiquities and curiosities.

The bombed out remains of the old church were kept intact next to the new one, as a reminder of the futility of war.

The barrel-made lookout from Shackleton's final ship is tucked away in the crypt of one of London's oldest churches.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

This pyramid is dedicated to all those who suffered martyrdom for civil and religious liberty in Scotland.

Fascinating town where normal life interfaces with the occult.

In the ruins of Glastonbury Abbey lies the alleged resting place of the legendary king.

This hill and tower are steeped in legend, from King Arthur to the Holy Grail.