Possibly the oldest living thing in Europe, more likely a pagan survivor.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

Ruined castle with subterranean vaulted Goblin Ha' or "Goblin Hall."

The mystery of this small, brick pond eluded its possibly only investigator until his death.

At high tide this strange footbridge appears to have no purpose whatsoever.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

A mysterious monument where a woman who records say never existed was burnt alive for being a witch.

This stately estate house features a tower covered in a bright, modern mural.

A small island abbey is the final resting place of many medieval Scottish monarchs, including the real Macbeth.

This Scottish bridge seems to compel dogs to leap to their death.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

A pagan tradition of draping trees with rags eerily lives on.

The elaborate clockwork contraptions in this Scottish gallery create small worlds of whimsy and horror.

The heads of two giant mythological water horses honor Scotland's horselord past.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

The fountain marks the area where hundreds of accused witches were burned at the stake.

This series of Scottish caves has no clear purpose other than baffling historians.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

360° views of the city plus five floors of optical illusions and hands-on science.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

A 30-acre garden inspired by the principles of modern physics.

The world's largest grapevine has produced a delicious harvest at Hampton Court Palace for almost 250 years.