Bloodstains can still be seen in this medieval church where two medics saved lives on D-Day.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

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

This crumbling coast and its teetering tower are literally filled with history, but they are also at great risk of becoming history themselves.

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

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

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

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.

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

Eighty million natural history specimens call this gargantuan museum home.

One part local history, 99 parts gruesome haunted house.

This charming, narrow-gauge railway in the Thames Estuary is sometimes referred to as the "Train to Nowhere."

This octagonal cottage is the smallest and the oldest council house in the United Kingdom.