One part local history, 99 parts gruesome haunted house.

A student driver's nightmare.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The world's largest collection of witchcraft regalia.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

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

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

A kaleidoscopic warehouse-maze of handmade neon signs.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

This hidden museum examines the complex history of the country's law enforcement.

A medieval abbey featured on 'Game of Thrones' that dates back to the 12th-century.

The "Black Arch" guards the entrance to the picturesque Glens of Antrim.

The atmospheric road was never meant to be so creepy.

Fluffy and friendly alpacas nestled against the border of the beautiful Connemara region.

See some of the world's greatest racing horses at this idyllic thoroughbred breeding facility and garden complex.

A stunning Victorian abbey and walled garden on a lakefront.

Petrified footprints of one of the very first vertebrates to walk on land.

Wander among the abandoned ruins of this once-powerful medieval town.

This Irish museum in a historic 19th century market pays tribute to the glory of butter.

A spectacular hidden beach in Ireland has the dark, disturbing nickname of "Murder Hole Beach."

An unusual manor of stunning beauty, born out of a crippling disease.