Now harmless, this looming post struck fear into the heart of medieval troublemakers.

19th century tunnels burrowed under Liverpool.

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

The site of the first battle of World War II.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

The blood-soaked ruins of the castle where the murderous Blood Countess was walled in alive.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

The final resting place for the remains of 143 Habsburg royalty.

Hidden in the woods behind this English estate lies a Victorian pet cemetery.

This museum houses an imposing skeleton army comprised of creatures great and small.

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

The wreck of a B-29 Superfortress now stands as a memorial left in the moors.

Mummified monks and the accidentally interred, in a 17th-century crypt.

Europe's second largest ossuary wasn't discovered until 2001.

This unique sculpture of a steelworker is hidden amid the trees of Sheffield.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

A headstone notes where the most famous of Robin Hood's legendary Merry Men is reportedly buried.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A quartet of rusting satellite goliaths are all that remain of a communication network that protected Britain from German and Russian air strikes.

This tower was constructed to commemorate the man who helped bring true democracy to the United Kingdom.

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

This mysterious hilltop collection of Druid carvings isn't quite what it seems.

The tallest freestanding structure in the United Kingdom.