Vast fan-shaped British cemetery honouring American servicemen lost in World War II.

The only fixed chain and post trail in Scotland snakes its way along the base of a towering seaside cliff.

Near Birmingham, England three and a half miles of top-secret tunnels housed a World War II “shadow factory” and a Cold War nuclear bunker.

This small museum in a 17th-century building honors three iconic Scottish writers.

Nestled amid the peaks and lochs of the Scottish Highlands, this inn and pub has played host to outlaws and ghosts.

Macbeth's infamous "Great Birnam Wood."

This Scottish manor house is a lush relic from the life of a literary great.

One family's environment-friendly hobbit-house in Wales.

Colin Stokes "got a bit carried away" and built a castle that looks like something out of Tolkien.

This observatory within Europe's first dark sky park offers stunning views of the night sky.

19th century museum with an eclectic mix of curiosities, from Egyptian artifacts to items on archery history to the skull of the world's oldest horse.

This magical museum celebrates the life and work of a seminal children's book writer (and occasional spy).

St. Mary's Asylum was isolated and abandoned before being converted into a Bed and Breakfast.

A glacial pothole was once a hideout for a notorious Scottish outlaw.

Dating back almost 400 years, the oldest public collection library in the United Kingdom was once the study hall of Karl Marx.

This abandoned asylum in Wales might look haunted, but it's still beautiful.

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

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

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

An 18th century monument regularly tagged with unsettling graffiti referencing a 1940s unsolved murder.

This antique prison is a tourist attraction with a sordid past.

This allegedly haunted 16th-century tower house-turned-museum exhibits thousands of spectacular objects.