Surreal riveted sea forts once protected the Kent shores from German attack.

This abandoned gun tower was built to defend the River Thames from a French naval attack.

The last resting place of the famous Native American princess is marked by a haunting monument.

This foreboding medieval castle was twice besieged by barons rebelling against the English king.

This star-shaped artillery fort protected the mouth of the Thames from the 16th century to the Second World War.

No one is sure what to do with this WWII shipwreck that sits at the bottom of the Thames, still loaded with tons of explosives.

A perilous medieval road leading right into the sea.

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

A story of cutlasses carelessly carving a celibate centenarian's cemetery stone.

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