Behind one of the world's most impenetrable vaults is a massive collection of retail silver.

The medieval legend behind this holy well was one of the inspirations behind "Alice's Adventures in Wonderland."

These bleak 800-year-old ruins were once the royal residence of choice for hunting in Sherwood Forest.

An enormous alien invades Woking, England, as an homage to the H.G. Wells classic 'The War of the Worlds.'

Modern commuters still pass through this 2,000-year-old Roman archway.

This centuries-old hotel hides a network of secret cellars and passages once used by smugglers.

This natural history collection contains the bones of a circus elephant that seem to be chasing a whale skeleton.

A vintage penny arcade hidden in the back of a fun fair-themed bar.

"The Most Wonderful Wonder that ever appeared to the Wonder of the British Nation."

This colossal war machine is now a living museum dedicated to underwater warfare.

Vast fan-shaped British cemetery honouring American servicemen lost in World War II.

Prehistoric sandstone menhir with Early Bronze Age cup and ring markings, also known as Robin Hood's Stone.

This landmark Victorian folly rewards visitors with spectacular views over the Peak District.

The remains of the concrete ship can be seen during low tide.

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

This centuries-old canal known as the Cuckoo Dyke has a staircase of locks suitable for a giant.

Giant statue of a disembodied head.

Legend says this little-known stone circle is formed from people petrified as punishment for dancing on the Sabbath.

This massive chalk hill carving is one of England's most beloved giant horse geoglyphs.

A hill carving of the legendary dragon that terrorized the village of Bures in the Middle Ages.

This macabre painting of a Shakespearean scene looks like something out of a nightmare.

The "beautiful" equation predicting the movement of all electromagnetic particles is engraved in front of Newton's tomb.

At just 25 inches at its narrowest point, it's one of the tightest streets in the world.

Colorful murals by Jean Cocteau hide within this peaceful London sanctuary.