Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

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

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

The location of the last witch trials of Italy, known as "The Salem of Europe."

This enchanting 600-year-old tree is so magical it inspired the beloved tale of Pinocchio.

One of the world's largest collections of pathological specimens.

The sign at the garden gate reads: "These Plants Can Kill."

Repository for more than 22 million pickled specimens.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

A collection dedicated to the treatment of disease, held in London's oldest hospital.

The largest of London's subterranean rivers and once a mad, bad center of London life.

Dictionary Johnson’s favorite feline.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

Hidden beneath the streets of London is a secret subway that only carried mail.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

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

A book bound in the skin of an infamous criminal, along with countless other specimens.

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

A secret garden in a picturesque Edinburgh village has inspired artists for centuries.

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

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

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.