The library houses an incredible collection of some of the world's most impressive books and manuscripts.

The monster at the center of the Darwin Center Spirit Collection.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

English antique dealers with a taste for the unusual.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

One part local history, 99 parts gruesome haunted house.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Half-drowned wooden stumps and stone blocks are all that remain of a Victorian landing that was destroyed by storms.

This tunnel entrance is built to resemble a grand castle but no one is quite sure why.

A five-story homage to tea times past.

A comic book store that puts the marvel back in marvellous.

This plaque in one of London's oldest public hospitals commemorates the first meeting of two of Britain's most famous literary heroes: Sherlock Holmes and Dr. Watson.

This underpass became an unlikely piece of cinematic history after its appearance in 'A Clockwork Orange.'

Conjoined twins Daisy and Violet Hilton were stars of the vaudeville circuit.

A 17th-century bezoar, dirt from an infamous site, and other curios decorate this unusual bar.

A wedding chapel, vintage clothing shop, and bar all under one roof.

Asheville, North Carolina, was the the second place in the world to enjoy Kentucky Fried Chicken's secret recipe.

This North Carolina museum is keeping the pinball craze alive, with a little Space Invaders on the side.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

Classy up your Big Mac with bow-tied servers and chandeliers at the world's fanciest McDonald's.

An early life spent in this "Old Kentucky Home" inspired the writings of North Carolina's most famous novelist.

This bridge is haunted by the ghost of a distraught mother.

The fine fabric handwoven at Biltmore Industries was once coveted around the world.

Practice your Dirty Dancing lifts in the manmade lake where Johnny Castle himself did.