One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

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

Home to Alan Turing, the cracking of the Enigma code, and Captain Ridley's shooting party.

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

A strange and ancient landscape hides the dark, cavernous remains of a 5,000-year-old flint mine.

This early 19th-century blast furnace only survived because it was a financial and technical failure.

Visit the WWII bunker where the British won the battle for the skies.

Locals call it the "Give Peas a Chance" bridge because of its distinct graffiti.

Human-made caves excavated to hide a secret society of wealthy pagans.

This unusual geoglyph was built as a warning so low-flying aircraft wouldn't scare the zoo animals.

Model aircraft soar over 360-degree views of the countryside at the start of England's oldest road.

This windmill is believed to be the oldest in the British Isles.

A giant roundabout made up of six smaller roundabouts can befuddle the uninitiated.

This suburban British town holds secrets that would have made the druids proud.

The first peace pagoda to be constructed in the Western world sits next to a small English lake.

The site of the notorious Great Train Robbery of £2.6 million, one of the biggest heists in English history.