Once a palace for the Archbishop of York, these 15th-century ruins now serve as a haunt for history buffs.

The UK's oldest theme park slowly slips away.

A beautiful medieval bridge allegedly constructed by the Devil.

This restaurant's specialty is "a major enigma for food historians."

This enormous spiral sculpture looks strangely out of place on the edge of a housing development.

A winding cave grotto walkway built to provide employment for veterans after World War I.

This giant geoglyph of mysterious origins is now the site of neo-pagan rituals.

A folly built to satisfy a gentleman's bet that he could drive his horses through the eye of a needle.

This 15th-century fortification was built to defend bunnies.

A seaside town with no sea in sight.

Giant statue of a disembodied head.

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

A museum in England’s Lake District dedicated to the trusty pencil wants you to know the story of their World War II spy pencils.

This ancient Bedfordshire church was abandoned when the village's population slowly began migrating to new towns.

A lavish Victorian mansion wound up inheriting a gruesome reputation that would be its demise.

"The Donut" was built as part of an expensive, ill-fated engineering endeavor.

An abandoned tower once used to study the cosmos hides within a thicket of greenery.

At night, the enormous sculpture looks like a UFO hovering above the English hills.

This tiny traditional smokehouse is the only one left in this historic fishing port.

England's largest white horse isn't even white.

This purpose-built dinosaur museum is shaped like a pterodactyl and holds fossils that were found in its very village.

This iconic Peak District ridge was once one of the busiest roads in medieval Britain.

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

Centuries later, the victims of Great Britain's greatest hysteria are finally being remembered.