A self-built castle made by a mysterious man.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Puppet theater and museum holding a collection of more than 300.

Step into Narnia at this small park featuring statues from "The Lion, the Witch, and the Wardrobe."

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

A small alleyway with an unusual moniker.

A signal indicates the entrance to this alley, rumored to be a meeting place for witches.

A mysterious emblem tucked in an small alleyway is actually the coat of arms of a heroic medieval family.

You won't find these curiously named passageways anywhere else in England.

This Funeral Hearse Museum represents the finest in cadaver transportation.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

Gothic tower where Lord Alfred Tennyson wrote the poem "The Sleeping Beauty."

Classic game cookery takes center stage at what's widely considered London's oldest restaurant.

This bewitching Babylonian goddess haunts a hallway of the British Museum.

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

This religious museum resides in a church crypt next to the founder's house.

King of the Saxons on top, Roman goddess of wisdom on the bottom.

Murals of the wild parties once held on the frozen River Thames.

This pub boasts a curious history and may have inspired a Dickens character.

This unassuming alcove in London’s famous Tower Bridge once served to capture, store, and display dead bodies from the River Thames.

A petite castle folly in the English countryside.

These marks in Myddelton Passage aren't your run-of-the-mill vandalism, and they weren't made by your typical vandal.

This informal museum is a magical trove of anonymous art collected from car boots and flea markets.

This wooden chair dates possibly back to the 15th century, and commemorates a local legend.