This castle resides in a valley known for immense bloodshed during the Middle Ages.

A series of idealized caves carved to entertain guests.

Legends say this red sandstone monolith and the dozens of smaller boulders that surround it were once a coven of witches—before a Scottish wizard turned them all to stone.

An impressive Neolithic henge with banks nearly 10 feet high.

Though this large circular site is now named for the legendary king, its history dates back to the Neolithic era.

The abandoned railway bridge stands hidden in the farmland of rural Cumbria.

This amazing trail among the many waterfalls around Ingleton has been enchanting visitors since 1885.

Locals spent years successfully fighting to save this beloved Brutalist behemoth from demolition.

A harrowing sculpture commemorates the four people shot down during the workers strike of 1842.

This hospital once pioneered the use of electroencephalograms, but fell into maltreatment, abuse, and eventual abandonment.

This 20th-century replica of a 13th-century castle has itself fallen into ruin.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

The oldest continual pilgrimage site in Britain was supposedly created by a gruesome beheading.

A geological wonder shrouded in myth.

A hundred copies of Antony Gormley's naked body stare out across the water.

This unique collection of lawnmowers includes vintage blueprints and automatic robot mowers.

The second-longest pier in the U.K. stretches a whole kilometer into the Irish Sea.

This former lifeboat house now used by a funeral service was the site of a 19th-century boating tragedy.

A typographic tribute to the many comedic greats who make Great Britain laugh.

One of the oldest amusement rides in existence was a huge disappointment to its creator.

This sculpture is an instrument played by the swell of the seas.

Once upon a time these giant concrete tanks were used by local fishermen to clean their wild-caught mussels.

A giant pineapple, a symbol of hospitality, and an amazing vacation rental option.

A once extravagant mansion, now reduced to ruin.